Finding the Fourth Proportional to 21,527.06, 32,339.18 and 12,767.72

Step by Step Solution

1. Step 1: Write the proportion equation
   21,527.06 : 32,339.18 = 12,767.72 : x
2. Step 2: Convert to fraction form
   21,527.06/32,339.18 = 12,767.72/x
3. Step 3: Cross multiply
   21,527.06x = 32,339.18 × 12,767.72
4. Step 4: Simplify right side
   21,527.06x = 412,897,595.27
5. Step 5: Solve for x
   x = 412,897,595.27/21,527.06
6. Step 6: Final answer
   x = 19,180.40