Finding the Fourth Proportional to 12,005.30, 18,002.55 and 4,607.30

Step by Step Solution

1. Step 1: Write the proportion equation
   12,005.30 : 18,002.55 = 4,607.30 : x
2. Step 2: Convert to fraction form
   12,005.30/18,002.55 = 4,607.30/x
3. Step 3: Cross multiply
   12,005.30x = 18,002.55 × 4,607.30
4. Step 4: Simplify right side
   12,005.30x = 82,943,148.62
5. Step 5: Solve for x
   x = 82,943,148.62/12,005.30
6. Step 6: Final answer
   x = 6,908.88