Finding the Fourth Proportional to 28,339.24, 42,507.78 and 7,562.56

Step by Step Solution

1. Step 1: Write the proportion equation
   28,339.24 : 42,507.78 = 7,562.56 : x
2. Step 2: Convert to fraction form
   28,339.24/42,507.78 = 7,562.56/x
3. Step 3: Cross multiply
   28,339.24x = 42,507.78 × 7,562.56
4. Step 4: Simplify right side
   28,339.24x = 321,467,636.72
5. Step 5: Solve for x
   x = 321,467,636.72/28,339.24
6. Step 6: Final answer
   x = 11,343.55