Finding the Fourth Proportional to 9,008.35, 12,431.61 and 5,423.73

Step by Step Solution

1. Step 1: Write the proportion equation
   9,008.35 : 12,431.61 = 5,423.73 : x
2. Step 2: Convert to fraction form
   9,008.35/12,431.61 = 5,423.73/x
3. Step 3: Cross multiply
   9,008.35x = 12,431.61 × 5,423.73
4. Step 4: Simplify right side
   9,008.35x = 67,425,649.49
5. Step 5: Solve for x
   x = 67,425,649.49/9,008.35
6. Step 6: Final answer
   x = 7,484.80