Finding the Fourth Proportional to 12,100.64, 18,152.78 and 4,307.63

Step by Step Solution

1. Step 1: Write the proportion equation
   12,100.64 : 18,152.78 = 4,307.63 : x
2. Step 2: Convert to fraction form
   12,100.64/18,152.78 = 4,307.63/x
3. Step 3: Cross multiply
   12,100.64x = 18,152.78 × 4,307.63
4. Step 4: Simplify right side
   12,100.64x = 78,195,347.41
5. Step 5: Solve for x
   x = 78,195,347.41/12,100.64
6. Step 6: Final answer
   x = 6,462.09