Finding the Fourth Proportional to 12,397.02, 17,101.55 and 7,916.06

Step by Step Solution

1. Step 1: Write the proportion equation
   12,397.02 : 17,101.55 = 7,916.06 : x
2. Step 2: Convert to fraction form
   12,397.02/17,101.55 = 7,916.06/x
3. Step 3: Cross multiply
   12,397.02x = 17,101.55 × 7,916.06
4. Step 4: Simplify right side
   12,397.02x = 135,376,895.89
5. Step 5: Solve for x
   x = 135,376,895.89/12,397.02
6. Step 6: Final answer
   x = 10,920.12