Finding the Fourth Proportional to 21,399.84, 32,101.20 and 5,816.16

Step by Step Solution

1. Step 1: Write the proportion equation
   21,399.84 : 32,101.20 = 5,816.16 : x
2. Step 2: Convert to fraction form
   21,399.84/32,101.20 = 5,816.16/x
3. Step 3: Cross multiply
   21,399.84x = 32,101.20 × 5,816.16
4. Step 4: Simplify right side
   21,399.84x = 186,705,715.39
5. Step 5: Solve for x
   x = 186,705,715.39/21,399.84
6. Step 6: Final answer
   x = 8,724.63