Finding the Fourth Proportional to 12,087.06, 18,117.63 and 5,065.31

Step by Step Solution

1. Step 1: Write the proportion equation
   12,087.06 : 18,117.63 = 5,065.31 : x
2. Step 2: Convert to fraction form
   12,087.06/18,117.63 = 5,065.31/x
3. Step 3: Cross multiply
   12,087.06x = 18,117.63 × 5,065.31
4. Step 4: Simplify right side
   12,087.06x = 91,771,412.42
5. Step 5: Solve for x
   x = 91,771,412.42/12,087.06
6. Step 6: Final answer
   x = 7,592.53