Finding the Fourth Proportional to 8,853.51, 12,221.16 and 5,870.35

Step by Step Solution

1. Step 1: Write the proportion equation
   8,853.51 : 12,221.16 = 5,870.35 : x
2. Step 2: Convert to fraction form
   8,853.51/12,221.16 = 5,870.35/x
3. Step 3: Cross multiply
   8,853.51x = 12,221.16 × 5,870.35
4. Step 4: Simplify right side
   8,853.51x = 71,742,523.90
5. Step 5: Solve for x
   x = 71,742,523.90/8,853.51
6. Step 6: Final answer
   x = 8,103.28