Finding the Fourth Proportional to 21,095.79, 31,641.48 and 5,513.37

Step by Step Solution

1. Step 1: Write the proportion equation
   21,095.79 : 31,641.48 = 5,513.37 : x
2. Step 2: Convert to fraction form
   21,095.79/31,641.48 = 5,513.37/x
3. Step 3: Cross multiply
   21,095.79x = 31,641.48 × 5,513.37
4. Step 4: Simplify right side
   21,095.79x = 174,451,186.59
5. Step 5: Solve for x
   x = 174,451,186.59/21,095.79
6. Step 6: Final answer
   x = 8,269.48