Finding the Fourth Proportional to 14,184.50, 21,295.59 and 12,117.78

Step by Step Solution

1. Step 1: Write the proportion equation
   14,184.50 : 21,295.59 = 12,117.78 : x
2. Step 2: Convert to fraction form
   14,184.50/21,295.59 = 12,117.78/x
3. Step 3: Cross multiply
   14,184.50x = 21,295.59 × 12,117.78
4. Step 4: Simplify right side
   14,184.50x = 258,055,274.59
5. Step 5: Solve for x
   x = 258,055,274.59/14,184.50
6. Step 6: Final answer
   x = 18,192.77