Finding the Fourth Proportional to 7,551.80, 10,426.56 and 5,780.24

Step by Step Solution

1. Step 1: Write the proportion equation
   7,551.80 : 10,426.56 = 5,780.24 : x
2. Step 2: Convert to fraction form
   7,551.80/10,426.56 = 5,780.24/x
3. Step 3: Cross multiply
   7,551.80x = 10,426.56 × 5,780.24
4. Step 4: Simplify right side
   7,551.80x = 60,268,019.17
5. Step 5: Solve for x
   x = 60,268,019.17/7,551.80
6. Step 6: Final answer
   x = 7,980.62