Finding the Fourth Proportional to 28,132.56, 42,197.67 and 7,072.74

Step by Step Solution

1. Step 1: Write the proportion equation
   28,132.56 : 42,197.67 = 7,072.74 : x
2. Step 2: Convert to fraction form
   28,132.56/42,197.67 = 7,072.74/x
3. Step 3: Cross multiply
   28,132.56x = 42,197.67 × 7,072.74
4. Step 4: Simplify right side
   28,132.56x = 298,453,148.52
5. Step 5: Solve for x
   x = 298,453,148.52/28,132.56
6. Step 6: Final answer
   x = 10,608.82