Finding the Fourth Proportional to 10,785.62, 16,156.56 and 5,580.56

Step by Step Solution

1. Step 1: Write the proportion equation
   10,785.62 : 16,156.56 = 5,580.56 : x
2. Step 2: Convert to fraction form
   10,785.62/16,156.56 = 5,580.56/x
3. Step 3: Cross multiply
   10,785.62x = 16,156.56 × 5,580.56
4. Step 4: Simplify right side
   10,785.62x = 90,162,713.79
5. Step 5: Solve for x
   x = 90,162,713.79/10,785.62
6. Step 6: Final answer
   x = 8,359.53