Finding the Fourth Proportional to 20,591.89, 30,888.34 and 5,800.71

Step by Step Solution

1. Step 1: Write the proportion equation
   20,591.89 : 30,888.34 = 5,800.71 : x
2. Step 2: Convert to fraction form
   20,591.89/30,888.34 = 5,800.71/x
3. Step 3: Cross multiply
   20,591.89x = 30,888.34 × 5,800.71
4. Step 4: Simplify right side
   20,591.89x = 179,174,302.72
5. Step 5: Solve for x
   x = 179,174,302.72/20,591.89
6. Step 6: Final answer
   x = 8,701.21