Finding the Fourth Proportional to 16,478.47, 22,741.46 and 9,405.96

Step by Step Solution

1. Step 1: Write the proportion equation
   16,478.47 : 22,741.46 = 9,405.96 : x
2. Step 2: Convert to fraction form
   16,478.47/22,741.46 = 9,405.96/x
3. Step 3: Cross multiply
   16,478.47x = 22,741.46 × 9,405.96
4. Step 4: Simplify right side
   16,478.47x = 213,905,263.10
5. Step 5: Solve for x
   x = 213,905,263.10/16,478.47
6. Step 6: Final answer
   x = 12,980.89