Finding the Fourth Proportional to 8,137.86, 12,189.51 and 5,506.98

Step by Step Solution

1. Step 1: Write the proportion equation
   8,137.86 : 12,189.51 = 5,506.98 : x
2. Step 2: Convert to fraction form
   8,137.86/12,189.51 = 5,506.98/x
3. Step 3: Cross multiply
   8,137.86x = 12,189.51 × 5,506.98
4. Step 4: Simplify right side
   8,137.86x = 67,127,387.78
5. Step 5: Solve for x
   x = 67,127,387.78/8,137.86
6. Step 6: Final answer
   x = 8,248.78