Finding the Fourth Proportional to 22,661.29, 33,987.39 and 7,870.87

Step by Step Solution

1. Step 1: Write the proportion equation
   22,661.29 : 33,987.39 = 7,870.87 : x
2. Step 2: Convert to fraction form
   22,661.29/33,987.39 = 7,870.87/x
3. Step 3: Cross multiply
   22,661.29x = 33,987.39 × 7,870.87
4. Step 4: Simplify right side
   22,661.29x = 267,510,328.33
5. Step 5: Solve for x
   x = 267,510,328.33/22,661.29
6. Step 6: Final answer
   x = 11,804.73