Finding the Fourth Proportional to 28,342.24, 42,494.12 and 15,870.84

Step by Step Solution

1. Step 1: Write the proportion equation
   28,342.24 : 42,494.12 = 15,870.84 : x
2. Step 2: Convert to fraction form
   28,342.24/42,494.12 = 15,870.84/x
3. Step 3: Cross multiply
   28,342.24x = 42,494.12 × 15,870.84
4. Step 4: Simplify right side
   28,342.24x = 674,417,379.46
5. Step 5: Solve for x
   x = 674,417,379.46/28,342.24
6. Step 6: Final answer
   x = 23,795.49