Finding the Fourth Proportional to 12,073.81, 18,106.28 and 4,174.30

Step by Step Solution

1. Step 1: Write the proportion equation
   12,073.81 : 18,106.28 = 4,174.30 : x
2. Step 2: Convert to fraction form
   12,073.81/18,106.28 = 4,174.30/x
3. Step 3: Cross multiply
   12,073.81x = 18,106.28 × 4,174.30
4. Step 4: Simplify right side
   12,073.81x = 75,580,978.47
5. Step 5: Solve for x
   x = 75,580,978.47/12,073.81
6. Step 6: Final answer
   x = 6,259.91