Finding the Fourth Proportional to 17,155.78, 23,669.57 and 9,600.91

Step by Step Solution

1. Step 1: Write the proportion equation
   17,155.78 : 23,669.57 = 9,600.91 : x
2. Step 2: Convert to fraction form
   17,155.78/23,669.57 = 9,600.91/x
3. Step 3: Cross multiply
   17,155.78x = 23,669.57 × 9,600.91
4. Step 4: Simplify right side
   17,155.78x = 227,249,328.96
5. Step 5: Solve for x
   x = 227,249,328.96/17,155.78
6. Step 6: Final answer
   x = 13,246.23