Finding the Fourth Proportional to 12,916.36, 17,825.16 and 10,117

Step by Step Solution

1. Step 1: Write the proportion equation
   12,916.36 : 17,825.16 = 10,117 : x
2. Step 2: Convert to fraction form
   12,916.36/17,825.16 = 10,117/x
3. Step 3: Cross multiply
   12,916.36x = 17,825.16 × 10,117
4. Step 4: Simplify right side
   12,916.36x = 180,337,143.72
5. Step 5: Solve for x
   x = 180,337,143.72/12,916.36
6. Step 6: Final answer
   x = 13,961.92