Finding the Fourth Proportional to 28,823.39, 42,948.56 and 25,679.24

Step by Step Solution

1. Step 1: Write the proportion equation
   28,823.39 : 42,948.56 = 25,679.24 : x
2. Step 2: Convert to fraction form
   28,823.39/42,948.56 = 25,679.24/x
3. Step 3: Cross multiply
   28,823.39x = 42,948.56 × 25,679.24
4. Step 4: Simplify right side
   28,823.39x = 1,102,886,379.89
5. Step 5: Solve for x
   x = 1,102,886,379.89/28,823.39
6. Step 6: Final answer
   x = 38,263.59