Finding the Fourth Proportional to 12,045.58, 18,061.15 and 4,643.89

Step by Step Solution

1. Step 1: Write the proportion equation
   12,045.58 : 18,061.15 = 4,643.89 : x
2. Step 2: Convert to fraction form
   12,045.58/18,061.15 = 4,643.89/x
3. Step 3: Cross multiply
   12,045.58x = 18,061.15 × 4,643.89
4. Step 4: Simplify right side
   12,045.58x = 83,873,993.87
5. Step 5: Solve for x
   x = 83,873,993.87/12,045.58
6. Step 6: Final answer
   x = 6,963.05