Finding the Fourth Proportional to 21,868.88, 32,799.81 and 7,826.30

Step by Step Solution

1. Step 1: Write the proportion equation
   21,868.88 : 32,799.81 = 7,826.30 : x
2. Step 2: Convert to fraction form
   21,868.88/32,799.81 = 7,826.30/x
3. Step 3: Cross multiply
   21,868.88x = 32,799.81 × 7,826.30
4. Step 4: Simplify right side
   21,868.88x = 256,701,153.00
5. Step 5: Solve for x
   x = 256,701,153.00/21,868.88
6. Step 6: Final answer
   x = 11,738.19