Finding the Fourth Proportional to 12,149.76, 18,224.48 and 3,384.72

Step by Step Solution

1. Step 1: Write the proportion equation
   12,149.76 : 18,224.48 = 3,384.72 : x
2. Step 2: Convert to fraction form
   12,149.76/18,224.48 = 3,384.72/x
3. Step 3: Cross multiply
   12,149.76x = 18,224.48 × 3,384.72
4. Step 4: Simplify right side
   12,149.76x = 61,684,761.95
5. Step 5: Solve for x
   x = 61,684,761.95/12,149.76
6. Step 6: Final answer
   x = 5,077.04