Finding the Fourth Proportional to 9,581.01, 13,221.59 and 5,389.26

Step by Step Solution

1. Step 1: Write the proportion equation
   9,581.01 : 13,221.59 = 5,389.26 : x
2. Step 2: Convert to fraction form
   9,581.01/13,221.59 = 5,389.26/x
3. Step 3: Cross multiply
   9,581.01x = 13,221.59 × 5,389.26
4. Step 4: Simplify right side
   9,581.01x = 71,254,586.12
5. Step 5: Solve for x
   x = 71,254,586.12/9,581.01
6. Step 6: Final answer
   x = 7,437.06