Finding the Fourth Proportional to 8,047.58, 12,055.16 and 5,115.38

Step by Step Solution

1. Step 1: Write the proportion equation
   8,047.58 : 12,055.16 = 5,115.38 : x
2. Step 2: Convert to fraction form
   8,047.58/12,055.16 = 5,115.38/x
3. Step 3: Cross multiply
   8,047.58x = 12,055.16 × 5,115.38
4. Step 4: Simplify right side
   8,047.58x = 61,666,676.87
5. Step 5: Solve for x
   x = 61,666,676.87/8,047.58
6. Step 6: Final answer
   x = 7,662.77