Finding the Fourth Proportional to 16,699.74, 23,050.71 and 9,630.78

Step by Step Solution

1. Step 1: Write the proportion equation
   16,699.74 : 23,050.71 = 9,630.78 : x
2. Step 2: Convert to fraction form
   16,699.74/23,050.71 = 9,630.78/x
3. Step 3: Cross multiply
   16,699.74x = 23,050.71 × 9,630.78
4. Step 4: Simplify right side
   16,699.74x = 221,996,316.85
5. Step 5: Solve for x
   x = 221,996,316.85/16,699.74
6. Step 6: Final answer
   x = 13,293.40