Finding the Fourth Proportional to 9,281.72, 13,904.01 and 5,581.91

Step by Step Solution

1. Step 1: Write the proportion equation
   9,281.72 : 13,904.01 = 5,581.91 : x
2. Step 2: Convert to fraction form
   9,281.72/13,904.01 = 5,581.91/x
3. Step 3: Cross multiply
   9,281.72x = 13,904.01 × 5,581.91
4. Step 4: Simplify right side
   9,281.72x = 77,610,862.94
5. Step 5: Solve for x
   x = 77,610,862.94/9,281.72
6. Step 6: Final answer
   x = 8,361.69