Finding the Fourth Proportional to 12,061.60, 18,094.20 and 4,269.79

Step by Step Solution

1. Step 1: Write the proportion equation
   12,061.60 : 18,094.20 = 4,269.79 : x
2. Step 2: Convert to fraction form
   12,061.60/18,094.20 = 4,269.79/x
3. Step 3: Cross multiply
   12,061.60x = 18,094.20 × 4,269.79
4. Step 4: Simplify right side
   12,061.60x = 77,258,434.22
5. Step 5: Solve for x
   x = 77,258,434.22/12,061.60
6. Step 6: Final answer
   x = 6,405.32