Finding the Fourth Proportional to 21,599.18, 32,401.52 and 8,449.87

Step by Step Solution

1. Step 1: Write the proportion equation
   21,599.18 : 32,401.52 = 8,449.87 : x
2. Step 2: Convert to fraction form
   21,599.18/32,401.52 = 8,449.87/x
3. Step 3: Cross multiply
   21,599.18x = 32,401.52 × 8,449.87
4. Step 4: Simplify right side
   21,599.18x = 273,788,427.55
5. Step 5: Solve for x
   x = 273,788,427.55/21,599.18
6. Step 6: Final answer
   x = 12,675.87