Finding the Fourth Proportional to 9,077.31, 12,521.24 and 5,714.28

Step by Step Solution

1. Step 1: Write the proportion equation
   9,077.31 : 12,521.24 = 5,714.28 : x
2. Step 2: Convert to fraction form
   9,077.31/12,521.24 = 5,714.28/x
3. Step 3: Cross multiply
   9,077.31x = 12,521.24 × 5,714.28
4. Step 4: Simplify right side
   9,077.31x = 71,549,871.31
5. Step 5: Solve for x
   x = 71,549,871.31/9,077.31
6. Step 6: Final answer
   x = 7,882.28