Finding the Fourth Proportional to 8,045.73, 12,071.25 and 3,115.40

Step by Step Solution

1. Step 1: Write the proportion equation
   8,045.73 : 12,071.25 = 3,115.40 : x
2. Step 2: Convert to fraction form
   8,045.73/12,071.25 = 3,115.40/x
3. Step 3: Cross multiply
   8,045.73x = 12,071.25 × 3,115.40
4. Step 4: Simplify right side
   8,045.73x = 37,606,711.89
5. Step 5: Solve for x
   x = 37,606,711.89/8,045.73
6. Step 6: Final answer
   x = 4,674.12