Finding the Fourth Proportional to 21,764.32, 32,641.52 and 10,659.84

Step by Step Solution

1. Step 1: Write the proportion equation
   21,764.32 : 32,641.52 = 10,659.84 : x
2. Step 2: Convert to fraction form
   21,764.32/32,641.52 = 10,659.84/x
3. Step 3: Cross multiply
   21,764.32x = 32,641.52 × 10,659.84
4. Step 4: Simplify right side
   21,764.32x = 347,953,380.56
5. Step 5: Solve for x
   x = 347,953,380.56/21,764.32
6. Step 6: Final answer
   x = 15,987.33