Finding the Fourth Proportional to 8,807.99, 12,150.96 and 7,800.71

Step by Step Solution

1. Step 1: Write the proportion equation
   8,807.99 : 12,150.96 = 7,800.71 : x
2. Step 2: Convert to fraction form
   8,807.99/12,150.96 = 7,800.71/x
3. Step 3: Cross multiply
   8,807.99x = 12,150.96 × 7,800.71
4. Step 4: Simplify right side
   8,807.99x = 94,786,069.05
5. Step 5: Solve for x
   x = 94,786,069.05/8,807.99
6. Step 6: Final answer
   x = 10,761.37