Finding the Fourth Proportional to 5,386.25, 8,026.50 and 5,210.07

Step by Step Solution

1. Step 1: Write the proportion equation
   5,386.25 : 8,026.50 = 5,210.07 : x
2. Step 2: Convert to fraction form
   5,386.25/8,026.50 = 5,210.07/x
3. Step 3: Cross multiply
   5,386.25x = 8,026.50 × 5,210.07
4. Step 4: Simplify right side
   5,386.25x = 41,818,626.86
5. Step 5: Solve for x
   x = 41,818,626.86/5,386.25
6. Step 6: Final answer
   x = 7,763.97