Finding the Fourth Proportional to 8,247.39, 12,377.16 and 5,131.98

Step by Step Solution

1. Step 1: Write the proportion equation
   8,247.39 : 12,377.16 = 5,131.98 : x
2. Step 2: Convert to fraction form
   8,247.39/12,377.16 = 5,131.98/x
3. Step 3: Cross multiply
   8,247.39x = 12,377.16 × 5,131.98
4. Step 4: Simplify right side
   8,247.39x = 63,519,337.58
5. Step 5: Solve for x
   x = 63,519,337.58/8,247.39
6. Step 6: Final answer
   x = 7,701.75