Finding the Fourth Proportional to 5,394.87, 8,085.33 and 5,256.50

Step by Step Solution

1. Step 1: Write the proportion equation
   5,394.87 : 8,085.33 = 5,256.50 : x
2. Step 2: Convert to fraction form
   5,394.87/8,085.33 = 5,256.50/x
3. Step 3: Cross multiply
   5,394.87x = 8,085.33 × 5,256.50
4. Step 4: Simplify right side
   5,394.87x = 42,500,496.72
5. Step 5: Solve for x
   x = 42,500,496.72/5,394.87
6. Step 6: Final answer
   x = 7,877.95