Finding the Fourth Proportional to 12,862.17, 17,748.54 and 7,196.58

Step by Step Solution

1. Step 1: Write the proportion equation
   12,862.17 : 17,748.54 = 7,196.58 : x
2. Step 2: Convert to fraction form
   12,862.17/17,748.54 = 7,196.58/x
3. Step 3: Cross multiply
   12,862.17x = 17,748.54 × 7,196.58
4. Step 4: Simplify right side
   12,862.17x = 127,728,787.99
5. Step 5: Solve for x
   x = 127,728,787.99/12,862.17
6. Step 6: Final answer
   x = 9,930.58