Finding the Fourth Proportional to 12,061.70, 18,077.96 and 5,121.62

Step by Step Solution

1. Step 1: Write the proportion equation
   12,061.70 : 18,077.96 = 5,121.62 : x
2. Step 2: Convert to fraction form
   12,061.70/18,077.96 = 5,121.62/x
3. Step 3: Cross multiply
   12,061.70x = 18,077.96 × 5,121.62
4. Step 4: Simplify right side
   12,061.70x = 92,588,441.50
5. Step 5: Solve for x
   x = 92,588,441.50/12,061.70
6. Step 6: Final answer
   x = 7,676.23