Finding the Fourth Proportional to 13,401.09, 18,491.52 and 7,432.81

Step by Step Solution

1. Step 1: Write the proportion equation
   13,401.09 : 18,491.52 = 7,432.81 : x
2. Step 2: Convert to fraction form
   13,401.09/18,491.52 = 7,432.81/x
3. Step 3: Cross multiply
   13,401.09x = 18,491.52 × 7,432.81
4. Step 4: Simplify right side
   13,401.09x = 137,443,862.31
5. Step 5: Solve for x
   x = 137,443,862.31/13,401.09
6. Step 6: Final answer
   x = 10,256.17