Finding the Fourth Proportional to 10,288.50, 14,198.13 and 5,572.79

Step by Step Solution

1. Step 1: Write the proportion equation
   10,288.50 : 14,198.13 = 5,572.79 : x
2. Step 2: Convert to fraction form
   10,288.50/14,198.13 = 5,572.79/x
3. Step 3: Cross multiply
   10,288.50x = 14,198.13 × 5,572.79
4. Step 4: Simplify right side
   10,288.50x = 79,123,125.89
5. Step 5: Solve for x
   x = 79,123,125.89/10,288.50
6. Step 6: Final answer
   x = 7,690.44