Finding the Fourth Proportional to 7,528.39, 10,385.89 and 5,291.71

Step by Step Solution

1. Step 1: Write the proportion equation
   7,528.39 : 10,385.89 = 5,291.71 : x
2. Step 2: Convert to fraction form
   7,528.39/10,385.89 = 5,291.71/x
3. Step 3: Cross multiply
   7,528.39x = 10,385.89 × 5,291.71
4. Step 4: Simplify right side
   7,528.39x = 54,959,078.78
5. Step 5: Solve for x
   x = 54,959,078.78/7,528.39
6. Step 6: Final answer
   x = 7,300.25