Finding the Fourth Proportional to 8,998.61, 12,417.20 and 5,222.03

Step by Step Solution

1. Step 1: Write the proportion equation
   8,998.61 : 12,417.20 = 5,222.03 : x
2. Step 2: Convert to fraction form
   8,998.61/12,417.20 = 5,222.03/x
3. Step 3: Cross multiply
   8,998.61x = 12,417.20 × 5,222.03
4. Step 4: Simplify right side
   8,998.61x = 64,842,902.72
5. Step 5: Solve for x
   x = 64,842,902.72/8,998.61
6. Step 6: Final answer
   x = 7,205.88