Finding the Fourth Proportional to 13,983.59, 20,975.29 and 5,663.48

Step by Step Solution

1. Step 1: Write the proportion equation
   13,983.59 : 20,975.29 = 5,663.48 : x
2. Step 2: Convert to fraction form
   13,983.59/20,975.29 = 5,663.48/x
3. Step 3: Cross multiply
   13,983.59x = 20,975.29 × 5,663.48
4. Step 4: Simplify right side
   13,983.59x = 118,793,016.37
5. Step 5: Solve for x
   x = 118,793,016.37/13,983.59
6. Step 6: Final answer
   x = 8,495.17