Finding the Fourth Proportional to 21,488.72, 32,243 and 9,805.52

Step by Step Solution

1. Step 1: Write the proportion equation
   21,488.72 : 32,243 = 9,805.52 : x
2. Step 2: Convert to fraction form
   21,488.72/32,243 = 9,805.52/x
3. Step 3: Cross multiply
   21,488.72x = 32,243 × 9,805.52
4. Step 4: Simplify right side
   21,488.72x = 316,159,381.36
5. Step 5: Solve for x
   x = 316,159,381.36/21,488.72
6. Step 6: Final answer
   x = 14,712.81