Finding the Fourth Proportional to 47,079.12, 70,617.72 and 12,018

Step by Step Solution

1. Step 1: Write the proportion equation
   47,079.12 : 70,617.72 = 12,018 : x
2. Step 2: Convert to fraction form
   47,079.12/70,617.72 = 12,018/x
3. Step 3: Cross multiply
   47,079.12x = 70,617.72 × 12,018
4. Step 4: Simplify right side
   47,079.12x = 848,683,758.96
5. Step 5: Solve for x
   x = 848,683,758.96/47,079.12
6. Step 6: Final answer
   x = 18,026.75