Finding the Fourth Proportional to 7,526.54, 10,380.09 and 5,642.37

Step by Step Solution

1. Step 1: Write the proportion equation
   7,526.54 : 10,380.09 = 5,642.37 : x
2. Step 2: Convert to fraction form
   7,526.54/10,380.09 = 5,642.37/x
3. Step 3: Cross multiply
   7,526.54x = 10,380.09 × 5,642.37
4. Step 4: Simplify right side
   7,526.54x = 58,568,308.41
5. Step 5: Solve for x
   x = 58,568,308.41/7,526.54
6. Step 6: Final answer
   x = 7,781.58