Finding the Fourth Proportional to 23,117, 31,901.32 and 12,506.60

Step by Step Solution

1. Step 1: Write the proportion equation
   23,117 : 31,901.32 = 12,506.60 : x
2. Step 2: Convert to fraction form
   23,117/31,901.32 = 12,506.60/x
3. Step 3: Cross multiply
   23,117x = 31,901.32 × 12,506.60
4. Step 4: Simplify right side
   23,117x = 398,977,048.71
5. Step 5: Solve for x
   x = 398,977,048.71/23,117
6. Step 6: Final answer
   x = 17,259.03