Finding the Fourth Proportional to 13,096.80, 19,646.72 and 4,331.78

Step by Step Solution

1. Step 1: Write the proportion equation
   13,096.80 : 19,646.72 = 4,331.78 : x
2. Step 2: Convert to fraction form
   13,096.80/19,646.72 = 4,331.78/x
3. Step 3: Cross multiply
   13,096.80x = 19,646.72 × 4,331.78
4. Step 4: Simplify right side
   13,096.80x = 85,105,268.76
5. Step 5: Solve for x
   x = 85,105,268.76/13,096.80
6. Step 6: Final answer
   x = 6,498.17