Finding the Fourth Proportional to 32,769.16, 45,186.42 and 21,571.72

Step by Step Solution

1. Step 1: Write the proportion equation
   32,769.16 : 45,186.42 = 21,571.72 : x
2. Step 2: Convert to fraction form
   32,769.16/45,186.42 = 21,571.72/x
3. Step 3: Cross multiply
   32,769.16x = 45,186.42 × 21,571.72
4. Step 4: Simplify right side
   32,769.16x = 974,748,800.04
5. Step 5: Solve for x
   x = 974,748,800.04/32,769.16
6. Step 6: Final answer
   x = 29,745.92