Finding the Fourth Proportional to 16,310.39, 22,553.64 and 12,947.37

Step by Step Solution

1. Step 1: Write the proportion equation
   16,310.39 : 22,553.64 = 12,947.37 : x
2. Step 2: Convert to fraction form
   16,310.39/22,553.64 = 12,947.37/x
3. Step 3: Cross multiply
   16,310.39x = 22,553.64 × 12,947.37
4. Step 4: Simplify right side
   16,310.39x = 292,010,314.10
5. Step 5: Solve for x
   x = 292,010,314.10/16,310.39
6. Step 6: Final answer
   x = 17,903.34