Finding the Fourth Proportional to 21,870.08, 32,797.06 and 7,826.28

Step by Step Solution

1. Step 1: Write the proportion equation
   21,870.08 : 32,797.06 = 7,826.28 : x
2. Step 2: Convert to fraction form
   21,870.08/32,797.06 = 7,826.28/x
3. Step 3: Cross multiply
   21,870.08x = 32,797.06 × 7,826.28
4. Step 4: Simplify right side
   21,870.08x = 256,678,974.74
5. Step 5: Solve for x
   x = 256,678,974.74/21,870.08
6. Step 6: Final answer
   x = 11,736.54