Finding the Fourth Proportional to 28,340.37, 42,507.32 and 7,565.49

Step by Step Solution

1. Step 1: Write the proportion equation
   28,340.37 : 42,507.32 = 7,565.49 : x
2. Step 2: Convert to fraction form
   28,340.37/42,507.32 = 7,565.49/x
3. Step 3: Cross multiply
   28,340.37x = 42,507.32 × 7,565.49
4. Step 4: Simplify right side
   28,340.37x = 321,588,666.56
5. Step 5: Solve for x
   x = 321,588,666.56/28,340.37
6. Step 6: Final answer
   x = 11,347.37