Finding the Fourth Proportional to 9,248.81, 12,763.30 and 5,057.06

Step by Step Solution

1. Step 1: Write the proportion equation
   9,248.81 : 12,763.30 = 5,057.06 : x
2. Step 2: Convert to fraction form
   9,248.81/12,763.30 = 5,057.06/x
3. Step 3: Cross multiply
   9,248.81x = 12,763.30 × 5,057.06
4. Step 4: Simplify right side
   9,248.81x = 64,544,773.90
5. Step 5: Solve for x
   x = 64,544,773.90/9,248.81
6. Step 6: Final answer
   x = 6,978.71