Finding the Fourth Proportional to 8,883.69, 12,261.29 and 5,109.50

Step by Step Solution

1. Step 1: Write the proportion equation
   8,883.69 : 12,261.29 = 5,109.50 : x
2. Step 2: Convert to fraction form
   8,883.69/12,261.29 = 5,109.50/x
3. Step 3: Cross multiply
   8,883.69x = 12,261.29 × 5,109.50
4. Step 4: Simplify right side
   8,883.69x = 62,648,974.40
5. Step 5: Solve for x
   x = 62,648,974.40/8,883.69
6. Step 6: Final answer
   x = 7,052.13