Finding the Fourth Proportional to 9,989.10, 14,992.86 and 5,062.20

Step by Step Solution

1. Step 1: Write the proportion equation
   9,989.10 : 14,992.86 = 5,062.20 : x
2. Step 2: Convert to fraction form
   9,989.10/14,992.86 = 5,062.20/x
3. Step 3: Cross multiply
   9,989.10x = 14,992.86 × 5,062.20
4. Step 4: Simplify right side
   9,989.10x = 75,896,855.89
5. Step 5: Solve for x
   x = 75,896,855.89/9,989.10
6. Step 6: Final answer
   x = 7,597.97