Finding the Fourth Proportional to 12,838.17, 17,715.82 and 7,248.81

Step by Step Solution

1. Step 1: Write the proportion equation
   12,838.17 : 17,715.82 = 7,248.81 : x
2. Step 2: Convert to fraction form
   12,838.17/17,715.82 = 7,248.81/x
3. Step 3: Cross multiply
   12,838.17x = 17,715.82 × 7,248.81
4. Step 4: Simplify right side
   12,838.17x = 128,418,613.17
5. Step 5: Solve for x
   x = 128,418,613.17/12,838.17
6. Step 6: Final answer
   x = 10,002.88