Finding the Fourth Proportional to 12,102.42, 18,150.06 and 4,705.20

Step by Step Solution

1. Step 1: Write the proportion equation
   12,102.42 : 18,150.06 = 4,705.20 : x
2. Step 2: Convert to fraction form
   12,102.42/18,150.06 = 4,705.20/x
3. Step 3: Cross multiply
   12,102.42x = 18,150.06 × 4,705.20
4. Step 4: Simplify right side
   12,102.42x = 85,399,662.31
5. Step 5: Solve for x
   x = 85,399,662.31/12,102.42
6. Step 6: Final answer
   x = 7,056.41