Finding the Fourth Proportional to 12,111.32, 18,154.74 and 4,711.16

Step by Step Solution

1. Step 1: Write the proportion equation
   12,111.32 : 18,154.74 = 4,711.16 : x
2. Step 2: Convert to fraction form
   12,111.32/18,154.74 = 4,711.16/x
3. Step 3: Cross multiply
   12,111.32x = 18,154.74 × 4,711.16
4. Step 4: Simplify right side
   12,111.32x = 85,529,884.90
5. Step 5: Solve for x
   x = 85,529,884.90/12,111.32
6. Step 6: Final answer
   x = 7,061.98