Finding the Fourth Proportional to 21,399.28, 32,098.34 and 5,816.50

Step by Step Solution

1. Step 1: Write the proportion equation
   21,399.28 : 32,098.34 = 5,816.50 : x
2. Step 2: Convert to fraction form
   21,399.28/32,098.34 = 5,816.50/x
3. Step 3: Cross multiply
   21,399.28x = 32,098.34 × 5,816.50
4. Step 4: Simplify right side
   21,399.28x = 186,699,994.61
5. Step 5: Solve for x
   x = 186,699,994.61/21,399.28
6. Step 6: Final answer
   x = 8,724.59