Finding the Fourth Proportional to 15,488.15, 21,373.68 and 8,414.58

Step by Step Solution

1. Step 1: Write the proportion equation
   15,488.15 : 21,373.68 = 8,414.58 : x
2. Step 2: Convert to fraction form
   15,488.15/21,373.68 = 8,414.58/x
3. Step 3: Cross multiply
   15,488.15x = 21,373.68 × 8,414.58
4. Step 4: Simplify right side
   15,488.15x = 179,850,498.18
5. Step 5: Solve for x
   x = 179,850,498.18/15,488.15
6. Step 6: Final answer
   x = 11,612.14