Finding the Fourth Proportional to 21,799.01, 32,700.78 and 7,760.33

Step by Step Solution

1. Step 1: Write the proportion equation
   21,799.01 : 32,700.78 = 7,760.33 : x
2. Step 2: Convert to fraction form
   21,799.01/32,700.78 = 7,760.33/x
3. Step 3: Cross multiply
   21,799.01x = 32,700.78 × 7,760.33
4. Step 4: Simplify right side
   21,799.01x = 253,768,680.55
5. Step 5: Solve for x
   x = 253,768,680.55/21,799.01
6. Step 6: Final answer
   x = 11,641.30