Finding the Fourth Proportional to 33,870.55, 50,787.15 and 11,665.61

Step by Step Solution

1. Step 1: Write the proportion equation
   33,870.55 : 50,787.15 = 11,665.61 : x
2. Step 2: Convert to fraction form
   33,870.55/50,787.15 = 11,665.61/x
3. Step 3: Cross multiply
   33,870.55x = 50,787.15 × 11,665.61
4. Step 4: Simplify right side
   33,870.55x = 592,463,084.91
5. Step 5: Solve for x
   x = 592,463,084.91/33,870.55
6. Step 6: Final answer
   x = 17,491.99