Finding the Fourth Proportional to 16,482.59, 22,749.72 and 12,890.47

Step by Step Solution

1. Step 1: Write the proportion equation
   16,482.59 : 22,749.72 = 12,890.47 : x
2. Step 2: Convert to fraction form
   16,482.59/22,749.72 = 12,890.47/x
3. Step 3: Cross multiply
   16,482.59x = 22,749.72 × 12,890.47
4. Step 4: Simplify right side
   16,482.59x = 293,254,583.17
5. Step 5: Solve for x
   x = 293,254,583.17/16,482.59
6. Step 6: Final answer
   x = 17,791.78