Finding the Fourth Proportional to 88,380.21, 132,570.59 and 21,820.33

Step by Step Solution

1. Step 1: Write the proportion equation
   88,380.21 : 132,570.59 = 21,820.33 : x
2. Step 2: Convert to fraction form
   88,380.21/132,570.59 = 21,820.33/x
3. Step 3: Cross multiply
   88,380.21x = 132,570.59 × 21,820.33
4. Step 4: Simplify right side
   88,380.21x = 2,892,734,022.09
5. Step 5: Solve for x
   x = 2,892,734,022.09/88,380.21
6. Step 6: Final answer
   x = 32,730.56