Finding the Fourth Proportional to 8,998.86, 12,426.06 and 5,647.26

Step by Step Solution

1. Step 1: Write the proportion equation
   8,998.86 : 12,426.06 = 5,647.26 : x
2. Step 2: Convert to fraction form
   8,998.86/12,426.06 = 5,647.26/x
3. Step 3: Cross multiply
   8,998.86x = 12,426.06 × 5,647.26
4. Step 4: Simplify right side
   8,998.86x = 70,173,191.60
5. Step 5: Solve for x
   x = 70,173,191.60/8,998.86
6. Step 6: Final answer
   x = 7,798.01