Finding the Fourth Proportional to 5,386.16, 8,095.12 and 5,240.72

Step by Step Solution

1. Step 1: Write the proportion equation
   5,386.16 : 8,095.12 = 5,240.72 : x
2. Step 2: Convert to fraction form
   5,386.16/8,095.12 = 5,240.72/x
3. Step 3: Cross multiply
   5,386.16x = 8,095.12 × 5,240.72
4. Step 4: Simplify right side
   5,386.16x = 42,424,257.29
5. Step 5: Solve for x
   x = 42,424,257.29/5,386.16
6. Step 6: Final answer
   x = 7,876.53