Finding the Fourth Proportional to 10,031.43, 15,061.74 and 7,407.03

Step by Step Solution

1. Step 1: Write the proportion equation
   10,031.43 : 15,061.74 = 7,407.03 : x
2. Step 2: Convert to fraction form
   10,031.43/15,061.74 = 7,407.03/x
3. Step 3: Cross multiply
   10,031.43x = 15,061.74 × 7,407.03
4. Step 4: Simplify right side
   10,031.43x = 111,562,760.03
5. Step 5: Solve for x
   x = 111,562,760.03/10,031.43
6. Step 6: Final answer
   x = 11,121.32