Finding the Fourth Proportional to 10,438.69, 15,654.15 and 4,196.60

Step by Step Solution

1. Step 1: Write the proportion equation
   10,438.69 : 15,654.15 = 4,196.60 : x
2. Step 2: Convert to fraction form
   10,438.69/15,654.15 = 4,196.60/x
3. Step 3: Cross multiply
   10,438.69x = 15,654.15 × 4,196.60
4. Step 4: Simplify right side
   10,438.69x = 65,694,184.91
5. Step 5: Solve for x
   x = 65,694,184.91/10,438.69
6. Step 6: Final answer
   x = 6,293.34