Finding the Fourth Proportional to 15,596.18, 21,520.86 and 8,881.82

Step by Step Solution

1. Step 1: Write the proportion equation
   15,596.18 : 21,520.86 = 8,881.82 : x
2. Step 2: Convert to fraction form
   15,596.18/21,520.86 = 8,881.82/x
3. Step 3: Cross multiply
   15,596.18x = 21,520.86 × 8,881.82
4. Step 4: Simplify right side
   15,596.18x = 191,144,404.77
5. Step 5: Solve for x
   x = 191,144,404.77/15,596.18
6. Step 6: Final answer
   x = 12,255.85