Finding the Fourth Proportional to 28,134.72, 42,201.24 and 7,074.72

Step by Step Solution

1. Step 1: Write the proportion equation
   28,134.72 : 42,201.24 = 7,074.72 : x
2. Step 2: Convert to fraction form
   28,134.72/42,201.24 = 7,074.72/x
3. Step 3: Cross multiply
   28,134.72x = 42,201.24 × 7,074.72
4. Step 4: Simplify right side
   28,134.72x = 298,561,956.65
5. Step 5: Solve for x
   x = 298,561,956.65/28,134.72
6. Step 6: Final answer
   x = 10,611.87