Finding the Fourth Proportional to 10,288.54, 14,198.16 and 5,572.90

Step by Step Solution

1. Step 1: Write the proportion equation
   10,288.54 : 14,198.16 = 5,572.90 : x
2. Step 2: Convert to fraction form
   10,288.54/14,198.16 = 5,572.90/x
3. Step 3: Cross multiply
   10,288.54x = 14,198.16 × 5,572.90
4. Step 4: Simplify right side
   10,288.54x = 79,124,925.86
5. Step 5: Solve for x
   x = 79,124,925.86/10,288.54
6. Step 6: Final answer
   x = 7,690.59