Finding the Fourth Proportional to 9,477.50, 13,079.00 and 5,228.71

Step by Step Solution

1. Step 1: Write the proportion equation
   9,477.50 : 13,079.00 = 5,228.71 : x
2. Step 2: Convert to fraction form
   9,477.50/13,079.00 = 5,228.71/x
3. Step 3: Cross multiply
   9,477.50x = 13,079.00 × 5,228.71
4. Step 4: Simplify right side
   9,477.50x = 68,386,278.46
5. Step 5: Solve for x
   x = 68,386,278.46/9,477.50
6. Step 6: Final answer
   x = 7,215.65