Finding the Fourth Proportional to 12,000.79, 18,001.59 and 3,235.78

Step by Step Solution

1. Step 1: Write the proportion equation
   12,000.79 : 18,001.59 = 3,235.78 : x
2. Step 2: Convert to fraction form
   12,000.79/18,001.59 = 3,235.78/x
3. Step 3: Cross multiply
   12,000.79x = 18,001.59 × 3,235.78
4. Step 4: Simplify right side
   12,000.79x = 58,249,184.89
5. Step 5: Solve for x
   x = 58,249,184.89/12,000.79
6. Step 6: Final answer
   x = 4,853.78