Finding the Fourth Proportional to 5,155.90, 7,116.83 and 3,031.32

Step by Step Solution

1. Step 1: Write the proportion equation
   5,155.90 : 7,116.83 = 3,031.32 : x
2. Step 2: Convert to fraction form
   5,155.90/7,116.83 = 3,031.32/x
3. Step 3: Cross multiply
   5,155.90x = 7,116.83 × 3,031.32
4. Step 4: Simplify right side
   5,155.90x = 21,573,400.79
5. Step 5: Solve for x
   x = 21,573,400.79/5,155.90
6. Step 6: Final answer
   x = 4,184.22