Finding the Fourth Proportional to 21,986.46, 32,956.47 and 7,191.42

Step by Step Solution

1. Step 1: Write the proportion equation
   21,986.46 : 32,956.47 = 7,191.42 : x
2. Step 2: Convert to fraction form
   21,986.46/32,956.47 = 7,191.42/x
3. Step 3: Cross multiply
   21,986.46x = 32,956.47 × 7,191.42
4. Step 4: Simplify right side
   21,986.46x = 237,003,817.49
5. Step 5: Solve for x
   x = 237,003,817.49/21,986.46
6. Step 6: Final answer
   x = 10,779.54