Finding the Fourth Proportional to 17,688, 24,406.20 and 12,983.52

Step by Step Solution

1. Step 1: Write the proportion equation
   17,688 : 24,406.20 = 12,983.52 : x
2. Step 2: Convert to fraction form
   17,688/24,406.20 = 12,983.52/x
3. Step 3: Cross multiply
   17,688x = 24,406.20 × 12,983.52
4. Step 4: Simplify right side
   17,688x = 316,878,385.82
5. Step 5: Solve for x
   x = 316,878,385.82/17,688
6. Step 6: Final answer
   x = 17,914.88