Finding the Fourth Proportional to 8,642.65, 11,927.01 and 5,105.86

Step by Step Solution

1. Step 1: Write the proportion equation
   8,642.65 : 11,927.01 = 5,105.86 : x
2. Step 2: Convert to fraction form
   8,642.65/11,927.01 = 5,105.86/x
3. Step 3: Cross multiply
   8,642.65x = 11,927.01 × 5,105.86
4. Step 4: Simplify right side
   8,642.65x = 60,897,626.23
5. Step 5: Solve for x
   x = 60,897,626.23/8,642.65
6. Step 6: Final answer
   x = 7,046.18