Finding the Fourth Proportional to 21,666.21, 32,487.57 and 9,969

Step by Step Solution

1. Step 1: Write the proportion equation
   21,666.21 : 32,487.57 = 9,969 : x
2. Step 2: Convert to fraction form
   21,666.21/32,487.57 = 9,969/x
3. Step 3: Cross multiply
   21,666.21x = 32,487.57 × 9,969
4. Step 4: Simplify right side
   21,666.21x = 323,868,585.33
5. Step 5: Solve for x
   x = 323,868,585.33/21,666.21
6. Step 6: Final answer
   x = 14,948.10