Finding the Fourth Proportional to 17,002.48, 23,474.80 and 10,638.72

Step by Step Solution

1. Step 1: Write the proportion equation
   17,002.48 : 23,474.80 = 10,638.72 : x
2. Step 2: Convert to fraction form
   17,002.48/23,474.80 = 10,638.72/x
3. Step 3: Cross multiply
   17,002.48x = 23,474.80 × 10,638.72
4. Step 4: Simplify right side
   17,002.48x = 249,741,824.26
5. Step 5: Solve for x
   x = 249,741,824.26/17,002.48
6. Step 6: Final answer
   x = 14,688.55