Finding the Fourth Proportional to 9,057.95, 12,500.00 and 5,280.83

Step by Step Solution

1. Step 1: Write the proportion equation
   9,057.95 : 12,500.00 = 5,280.83 : x
2. Step 2: Convert to fraction form
   9,057.95/12,500.00 = 5,280.83/x
3. Step 3: Cross multiply
   9,057.95x = 12,500.00 × 5,280.83
4. Step 4: Simplify right side
   9,057.95x = 66,010,286.10
5. Step 5: Solve for x
   x = 66,010,286.10/9,057.95
6. Step 6: Final answer
   x = 7,287.56