Finding the Fourth Proportional to 9,030.40, 12,435.96 and 7,443.91

Step by Step Solution

1. Step 1: Write the proportion equation
   9,030.40 : 12,435.96 = 7,443.91 : x
2. Step 2: Convert to fraction form
   9,030.40/12,435.96 = 7,443.91/x
3. Step 3: Cross multiply
   9,030.40x = 12,435.96 × 7,443.91
4. Step 4: Simplify right side
   9,030.40x = 92,572,129.78
5. Step 5: Solve for x
   x = 92,572,129.78/9,030.40
6. Step 6: Final answer
   x = 10,251.17