Finding the Fourth Proportional to 15,562.30, 21,475.83 and 8,488.57

Step by Step Solution

1. Step 1: Write the proportion equation
   15,562.30 : 21,475.83 = 8,488.57 : x
2. Step 2: Convert to fraction form
   15,562.30/21,475.83 = 8,488.57/x
3. Step 3: Cross multiply
   15,562.30x = 21,475.83 × 8,488.57
4. Step 4: Simplify right side
   15,562.30x = 182,298,978.88
5. Step 5: Solve for x
   x = 182,298,978.88/15,562.30
6. Step 6: Final answer
   x = 11,714.14