Finding the Fourth Proportional to 9,057.81, 12,498.05 and 5,472.05

Step by Step Solution

1. Step 1: Write the proportion equation
   9,057.81 : 12,498.05 = 5,472.05 : x
2. Step 2: Convert to fraction form
   9,057.81/12,498.05 = 5,472.05/x
3. Step 3: Cross multiply
   9,057.81x = 12,498.05 × 5,472.05
4. Step 4: Simplify right side
   9,057.81x = 68,389,864.65
5. Step 5: Solve for x
   x = 68,389,864.65/9,057.81
6. Step 6: Final answer
   x = 7,550.38