Finding the Fourth Proportional to 12,079.12, 18,111.24 and 7,914.04

Step by Step Solution

1. Step 1: Write the proportion equation
   12,079.12 : 18,111.24 = 7,914.04 : x
2. Step 2: Convert to fraction form
   12,079.12/18,111.24 = 7,914.04/x
3. Step 3: Cross multiply
   12,079.12x = 18,111.24 × 7,914.04
4. Step 4: Simplify right side
   12,079.12x = 143,333,077.81
5. Step 5: Solve for x
   x = 143,333,077.81/12,079.12
6. Step 6: Final answer
   x = 11,866.19