Finding the Fourth Proportional to 17,088.42, 23,584.15 and 9,916.80

Step by Step Solution

1. Step 1: Write the proportion equation
   17,088.42 : 23,584.15 = 9,916.80 : x
2. Step 2: Convert to fraction form
   17,088.42/23,584.15 = 9,916.80/x
3. Step 3: Cross multiply
   17,088.42x = 23,584.15 × 9,916.80
4. Step 4: Simplify right side
   17,088.42x = 233,879,264.55
5. Step 5: Solve for x
   x = 233,879,264.55/17,088.42
6. Step 6: Final answer
   x = 13,686.42