Finding the Fourth Proportional to 21,982.64, 32,900.52 and 13,069.04

Step by Step Solution

1. Step 1: Write the proportion equation
   21,982.64 : 32,900.52 = 13,069.04 : x
2. Step 2: Convert to fraction form
   21,982.64/32,900.52 = 13,069.04/x
3. Step 3: Cross multiply
   21,982.64x = 32,900.52 × 13,069.04
4. Step 4: Simplify right side
   21,982.64x = 429,978,211.90
5. Step 5: Solve for x
   x = 429,978,211.90/21,982.64
6. Step 6: Final answer
   x = 19,559.90