Finding the Fourth Proportional to 12,077.31, 18,087.32 and 9,570.43

Step by Step Solution

1. Step 1: Write the proportion equation
   12,077.31 : 18,087.32 = 9,570.43 : x
2. Step 2: Convert to fraction form
   12,077.31/18,087.32 = 9,570.43/x
3. Step 3: Cross multiply
   12,077.31x = 18,087.32 × 9,570.43
4. Step 4: Simplify right side
   12,077.31x = 173,103,476.48
5. Step 5: Solve for x
   x = 173,103,476.48/12,077.31
6. Step 6: Final answer
   x = 14,332.95