Finding the Fourth Proportional to 12,055.46, 18,068.58 and 5,115.38

Step by Step Solution

1. Step 1: Write the proportion equation
   12,055.46 : 18,068.58 = 5,115.38 : x
2. Step 2: Convert to fraction form
   12,055.46/18,068.58 = 5,115.38/x
3. Step 3: Cross multiply
   12,055.46x = 18,068.58 × 5,115.38
4. Step 4: Simplify right side
   12,055.46x = 92,427,562.42
5. Step 5: Solve for x
   x = 92,427,562.42/12,055.46
6. Step 6: Final answer
   x = 7,666.87