Finding the Fourth Proportional to 12,115.98, 18,179.24 and 5,100.57

Step by Step Solution

1. Step 1: Write the proportion equation
   12,115.98 : 18,179.24 = 5,100.57 : x
2. Step 2: Convert to fraction form
   12,115.98/18,179.24 = 5,100.57/x
3. Step 3: Cross multiply
   12,115.98x = 18,179.24 × 5,100.57
4. Step 4: Simplify right side
   12,115.98x = 92,724,460.66
5. Step 5: Solve for x
   x = 92,724,460.66/12,115.98
6. Step 6: Final answer
   x = 7,653.07