Finding the Fourth Proportional to 21,435.63, 32,154.30 and 5,853.21

Step by Step Solution

1. Step 1: Write the proportion equation
   21,435.63 : 32,154.30 = 5,853.21 : x
2. Step 2: Convert to fraction form
   21,435.63/32,154.30 = 5,853.21/x
3. Step 3: Cross multiply
   21,435.63x = 32,154.30 × 5,853.21
4. Step 4: Simplify right side
   21,435.63x = 188,205,870.30
5. Step 5: Solve for x
   x = 188,205,870.30/21,435.63
6. Step 6: Final answer
   x = 8,780.05