Finding the Fourth Proportional to 12,111.30, 18,168.12 and 4,716.36

Step by Step Solution

1. Step 1: Write the proportion equation
   12,111.30 : 18,168.12 = 4,716.36 : x
2. Step 2: Convert to fraction form
   12,111.30/18,168.12 = 4,716.36/x
3. Step 3: Cross multiply
   12,111.30x = 18,168.12 × 4,716.36
4. Step 4: Simplify right side
   12,111.30x = 85,687,394.44
5. Step 5: Solve for x
   x = 85,687,394.44/12,111.30
6. Step 6: Final answer
   x = 7,075.00