Finding the Fourth Proportional to 5,398.16, 8,113.12 and 5,252.72

Step by Step Solution

1. Step 1: Write the proportion equation
   5,398.16 : 8,113.12 = 5,252.72 : x
2. Step 2: Convert to fraction form
   5,398.16/8,113.12 = 5,252.72/x
3. Step 3: Cross multiply
   5,398.16x = 8,113.12 × 5,252.72
4. Step 4: Simplify right side
   5,398.16x = 42,615,947.69
5. Step 5: Solve for x
   x = 42,615,947.69/5,398.16
6. Step 6: Final answer
   x = 7,894.53