Finding the Fourth Proportional to 12,729.33, 19,071.41 and 5,317.49

Step by Step Solution

1. Step 1: Write the proportion equation
   12,729.33 : 19,071.41 = 5,317.49 : x
2. Step 2: Convert to fraction form
   12,729.33/19,071.41 = 5,317.49/x
3. Step 3: Cross multiply
   12,729.33x = 19,071.41 × 5,317.49
4. Step 4: Simplify right side
   12,729.33x = 101,411,910.02
5. Step 5: Solve for x
   x = 101,411,910.02/12,729.33
6. Step 6: Final answer
   x = 7,966.79