Finding the Fourth Proportional to 13,456.64, 20,185.98 and 4,097.45

Step by Step Solution

1. Step 1: Write the proportion equation
   13,456.64 : 20,185.98 = 4,097.45 : x
2. Step 2: Convert to fraction form
   13,456.64/20,185.98 = 4,097.45/x
3. Step 3: Cross multiply
   13,456.64x = 20,185.98 × 4,097.45
4. Step 4: Simplify right side
   13,456.64x = 82,711,094.22
5. Step 5: Solve for x
   x = 82,711,094.22/13,456.64
6. Step 6: Final answer
   x = 6,146.49