Finding the Fourth Proportional to 13,100.67, 19,650.96 and 5,309.46

Step by Step Solution

1. Step 1: Write the proportion equation
   13,100.67 : 19,650.96 = 5,309.46 : x
2. Step 2: Convert to fraction form
   13,100.67/19,650.96 = 5,309.46/x
3. Step 3: Cross multiply
   13,100.67x = 19,650.96 × 5,309.46
4. Step 4: Simplify right side
   13,100.67x = 104,335,986.08
5. Step 5: Solve for x
   x = 104,335,986.08/13,100.67
6. Step 6: Final answer
   x = 7,964.17