Finding the Fourth Proportional to 10,238.10, 15,320.70 and 7,103.40

Step by Step Solution

1. Step 1: Write the proportion equation
   10,238.10 : 15,320.70 = 7,103.40 : x
2. Step 2: Convert to fraction form
   10,238.10/15,320.70 = 7,103.40/x
3. Step 3: Cross multiply
   10,238.10x = 15,320.70 × 7,103.40
4. Step 4: Simplify right side
   10,238.10x = 108,829,060.38
5. Step 5: Solve for x
   x = 108,829,060.38/10,238.10
6. Step 6: Final answer
   x = 10,629.81