Finding the Fourth Proportional to 12,112.89, 18,165.83 and 4,715.70

Step by Step Solution

1. Step 1: Write the proportion equation
   12,112.89 : 18,165.83 = 4,715.70 : x
2. Step 2: Convert to fraction form
   12,112.89/18,165.83 = 4,715.70/x
3. Step 3: Cross multiply
   12,112.89x = 18,165.83 × 4,715.70
4. Step 4: Simplify right side
   12,112.89x = 85,664,580.95
5. Step 5: Solve for x
   x = 85,664,580.95/12,112.89
6. Step 6: Final answer
   x = 7,072.18