Finding the Fourth Proportional to 21,928.32, 32,815.94 and 17,933.40

Step by Step Solution

1. Step 1: Write the proportion equation
   21,928.32 : 32,815.94 = 17,933.40 : x
2. Step 2: Convert to fraction form
   21,928.32/32,815.94 = 17,933.40/x
3. Step 3: Cross multiply
   21,928.32x = 32,815.94 × 17,933.40
4. Step 4: Simplify right side
   21,928.32x = 588,501,288.73
5. Step 5: Solve for x
   x = 588,501,288.73/21,928.32
6. Step 6: Final answer
   x = 26,837.50