Finding the Fourth Proportional to 16,481.59, 22,748.34 and 12,889.47

Step by Step Solution

1. Step 1: Write the proportion equation
   16,481.59 : 22,748.34 = 12,889.47 : x
2. Step 2: Convert to fraction form
   16,481.59/22,748.34 = 12,889.47/x
3. Step 3: Cross multiply
   16,481.59x = 22,748.34 × 12,889.47
4. Step 4: Simplify right side
   16,481.59x = 293,214,045.98
5. Step 5: Solve for x
   x = 293,214,045.98/16,481.59
6. Step 6: Final answer
   x = 17,790.40