Finding the Fourth Proportional to 12,127.18, 18,191.37 and 4,335.99

Step by Step Solution

1. Step 1: Write the proportion equation
   12,127.18 : 18,191.37 = 4,335.99 : x
2. Step 2: Convert to fraction form
   12,127.18/18,191.37 = 4,335.99/x
3. Step 3: Cross multiply
   12,127.18x = 18,191.37 × 4,335.99
4. Step 4: Simplify right side
   12,127.18x = 78,877,552.93
5. Step 5: Solve for x
   x = 78,877,552.93/12,127.18
6. Step 6: Final answer
   x = 6,504.20