Finding the Fourth Proportional to 17,192.10, 23,726.78 and 9,638.45

Step by Step Solution

1. Step 1: Write the proportion equation
   17,192.10 : 23,726.78 = 9,638.45 : x
2. Step 2: Convert to fraction form
   17,192.10/23,726.78 = 9,638.45/x
3. Step 3: Cross multiply
   17,192.10x = 23,726.78 × 9,638.45
4. Step 4: Simplify right side
   17,192.10x = 228,689,382.69
5. Step 5: Solve for x
   x = 228,689,382.69/17,192.10
6. Step 6: Final answer
   x = 13,302.00