Finding the Fourth Proportional to 8,662.50, 11,948.67 and 5,123.25

Step by Step Solution

1. Step 1: Write the proportion equation
   8,662.50 : 11,948.67 = 5,123.25 : x
2. Step 2: Convert to fraction form
   8,662.50/11,948.67 = 5,123.25/x
3. Step 3: Cross multiply
   8,662.50x = 11,948.67 × 5,123.25
4. Step 4: Simplify right side
   8,662.50x = 61,216,023.58
5. Step 5: Solve for x
   x = 61,216,023.58/8,662.50
6. Step 6: Final answer
   x = 7,066.78