Finding the Fourth Proportional to 13,216.97, 19,819.17 and 7,672.01

Step by Step Solution

1. Step 1: Write the proportion equation
   13,216.97 : 19,819.17 = 7,672.01 : x
2. Step 2: Convert to fraction form
   13,216.97/19,819.17 = 7,672.01/x
3. Step 3: Cross multiply
   13,216.97x = 19,819.17 × 7,672.01
4. Step 4: Simplify right side
   13,216.97x = 152,052,870.43
5. Step 5: Solve for x
   x = 152,052,870.43/13,216.97
6. Step 6: Final answer
   x = 11,504.37