Finding the Fourth Proportional to 7,301.72, 10,081.20 and 5,620.16

Step by Step Solution

1. Step 1: Write the proportion equation
   7,301.72 : 10,081.20 = 5,620.16 : x
2. Step 2: Convert to fraction form
   7,301.72/10,081.20 = 5,620.16/x
3. Step 3: Cross multiply
   7,301.72x = 10,081.20 × 5,620.16
4. Step 4: Simplify right side
   7,301.72x = 56,657,906.59
5. Step 5: Solve for x
   x = 56,657,906.59/7,301.72
6. Step 6: Final answer
   x = 7,759.53