Finding the Fourth Proportional to 5,185.23, 7,789.61 and 2,999.31

Step by Step Solution

1. Step 1: Write the proportion equation
   5,185.23 : 7,789.61 = 2,999.31 : x
2. Step 2: Convert to fraction form
   5,185.23/7,789.61 = 2,999.31/x
3. Step 3: Cross multiply
   5,185.23x = 7,789.61 × 2,999.31
4. Step 4: Simplify right side
   5,185.23x = 23,363,440.17
5. Step 5: Solve for x
   x = 23,363,440.17/5,185.23
6. Step 6: Final answer
   x = 4,505.77