Finding the Fourth Proportional to 17,487.16, 24,139.02 and 12,808.60

Step by Step Solution

1. Step 1: Write the proportion equation
   17,487.16 : 24,139.02 = 12,808.60 : x
2. Step 2: Convert to fraction form
   17,487.16/24,139.02 = 12,808.60/x
3. Step 3: Cross multiply
   17,487.16x = 24,139.02 × 12,808.60
4. Step 4: Simplify right side
   17,487.16x = 309,187,051.57
5. Step 5: Solve for x
   x = 309,187,051.57/17,487.16
6. Step 6: Final answer
   x = 17,680.80