Finding the Fourth Proportional to 13,789.58, 20,678.69 and 5,468.45

Step by Step Solution

1. Step 1: Write the proportion equation
   13,789.58 : 20,678.69 = 5,468.45 : x
2. Step 2: Convert to fraction form
   13,789.58/20,678.69 = 5,468.45/x
3. Step 3: Cross multiply
   13,789.58x = 20,678.69 × 5,468.45
4. Step 4: Simplify right side
   13,789.58x = 113,080,292.61
5. Step 5: Solve for x
   x = 113,080,292.61/13,789.58
6. Step 6: Final answer
   x = 8,200.42