Finding the Fourth Proportional to 17,677.06, 24,401.70 and 12,643.30

Step by Step Solution

1. Step 1: Write the proportion equation
   17,677.06 : 24,401.70 = 12,643.30 : x
2. Step 2: Convert to fraction form
   17,677.06/24,401.70 = 12,643.30/x
3. Step 3: Cross multiply
   17,677.06x = 24,401.70 × 12,643.30
4. Step 4: Simplify right side
   17,677.06x = 308,518,013.61
5. Step 5: Solve for x
   x = 308,518,013.61/17,677.06
6. Step 6: Final answer
   x = 17,453.02