Finding the Fourth Proportional to 12,105,784.35, 18,122,694.71 and 12,089,841.12

Step by Step Solution

1. Step 1: Write the proportion equation
   12,105,784.35 : 18,122,694.71 = 12,089,841.12 : x
2. Step 2: Convert to fraction form
   12,105,784.35/18,122,694.71 = 12,089,841.12/x
3. Step 3: Cross multiply
   12,105,784.35x = 18,122,694.71 × 12,089,841.12
4. Step 4: Simplify right side
   12,105,784.35x = 219,100,499,649,715.22
5. Step 5: Solve for x
   x = 219,100,499,649,715.22/12,105,784.35
6. Step 6: Final answer
   x = 18,098,827.25