Finding the Fourth Proportional to 12,085.04, 18,124.72 and 3,320.64

Step by Step Solution

1. Step 1: Write the proportion equation
   12,085.04 : 18,124.72 = 3,320.64 : x
2. Step 2: Convert to fraction form
   12,085.04/18,124.72 = 3,320.64/x
3. Step 3: Cross multiply
   12,085.04x = 18,124.72 × 3,320.64
4. Step 4: Simplify right side
   12,085.04x = 60,185,670.22
5. Step 5: Solve for x
   x = 60,185,670.22/12,085.04
6. Step 6: Final answer
   x = 4,980.18