Finding the Fourth Proportional to 28,546.86, 42,825.78 and 8,824.71

Step by Step Solution

1. Step 1: Write the proportion equation
   28,546.86 : 42,825.78 = 8,824.71 : x
2. Step 2: Convert to fraction form
   28,546.86/42,825.78 = 8,824.71/x
3. Step 3: Cross multiply
   28,546.86x = 42,825.78 × 8,824.71
4. Step 4: Simplify right side
   28,546.86x = 377,925,089.02
5. Step 5: Solve for x
   x = 377,925,089.02/28,546.86
6. Step 6: Final answer
   x = 13,238.76