Finding the Fourth Proportional to 21,388.38, 32,086.62 and 9,702.51

Step by Step Solution

1. Step 1: Write the proportion equation
   21,388.38 : 32,086.62 = 9,702.51 : x
2. Step 2: Convert to fraction form
   21,388.38/32,086.62 = 9,702.51/x
3. Step 3: Cross multiply
   21,388.38x = 32,086.62 × 9,702.51
4. Step 4: Simplify right side
   21,388.38x = 311,320,751.42
5. Step 5: Solve for x
   x = 311,320,751.42/21,388.38
6. Step 6: Final answer
   x = 14,555.60