Finding the Fourth Proportional to 9,381.31, 12,949.48 and 5,404.01

Step by Step Solution

1. Step 1: Write the proportion equation
   9,381.31 : 12,949.48 = 5,404.01 : x
2. Step 2: Convert to fraction form
   9,381.31/12,949.48 = 5,404.01/x
3. Step 3: Cross multiply
   9,381.31x = 12,949.48 × 5,404.01
4. Step 4: Simplify right side
   9,381.31x = 69,979,119.41
5. Step 5: Solve for x
   x = 69,979,119.41/9,381.31
6. Step 6: Final answer
   x = 7,459.42