Finding the Fourth Proportional to 10,581.70, 14,569.50 and 8,985.02

Step by Step Solution

1. Step 1: Write the proportion equation
   10,581.70 : 14,569.50 = 8,985.02 : x
2. Step 2: Convert to fraction form
   10,581.70/14,569.50 = 8,985.02/x
3. Step 3: Cross multiply
   10,581.70x = 14,569.50 × 8,985.02
4. Step 4: Simplify right side
   10,581.70x = 130,907,248.89
5. Step 5: Solve for x
   x = 130,907,248.89/10,581.70
6. Step 6: Final answer
   x = 12,371.10