Finding the Fourth Proportional to 5,870.22, 8,784.36 and 5,099.31

Step by Step Solution

1. Step 1: Write the proportion equation
   5,870.22 : 8,784.36 = 5,099.31 : x
2. Step 2: Convert to fraction form
   5,870.22/8,784.36 = 5,099.31/x
3. Step 3: Cross multiply
   5,870.22x = 8,784.36 × 5,099.31
4. Step 4: Simplify right side
   5,870.22x = 44,794,174.79
5. Step 5: Solve for x
   x = 44,794,174.79/5,870.22
6. Step 6: Final answer
   x = 7,630.75