Finding the Fourth Proportional to 12,339, 18,510.42 and 4,017.05

Step by Step Solution

1. Step 1: Write the proportion equation
   12,339 : 18,510.42 = 4,017.05 : x
2. Step 2: Convert to fraction form
   12,339/18,510.42 = 4,017.05/x
3. Step 3: Cross multiply
   12,339x = 18,510.42 × 4,017.05
4. Step 4: Simplify right side
   12,339x = 74,357,274.59
5. Step 5: Solve for x
   x = 74,357,274.59/12,339
6. Step 6: Final answer
   x = 6,026.20