Finding the Fourth Proportional to 9,054.28, 12,492.17 and 5,700.43

Step by Step Solution

1. Step 1: Write the proportion equation
   9,054.28 : 12,492.17 = 5,700.43 : x
2. Step 2: Convert to fraction form
   9,054.28/12,492.17 = 5,700.43/x
3. Step 3: Cross multiply
   9,054.28x = 12,492.17 × 5,700.43
4. Step 4: Simplify right side
   9,054.28x = 71,210,710.92
5. Step 5: Solve for x
   x = 71,210,710.92/9,054.28
6. Step 6: Final answer
   x = 7,864.87