Finding the Fourth Proportional to 21,928.10, 32,891.86 and 5,288.01

Step by Step Solution

1. Step 1: Write the proportion equation
   21,928.10 : 32,891.86 = 5,288.01 : x
2. Step 2: Convert to fraction form
   21,928.10/32,891.86 = 5,288.01/x
3. Step 3: Cross multiply
   21,928.10x = 32,891.86 × 5,288.01
4. Step 4: Simplify right side
   21,928.10x = 173,932,293.70
5. Step 5: Solve for x
   x = 173,932,293.70/21,928.10
6. Step 6: Final answer
   x = 7,931.94