Finding the Fourth Proportional to 13,259.38, 19,885.99 and 3,896.89

Step by Step Solution

1. Step 1: Write the proportion equation
   13,259.38 : 19,885.99 = 3,896.89 : x
2. Step 2: Convert to fraction form
   13,259.38/19,885.99 = 3,896.89/x
3. Step 3: Cross multiply
   13,259.38x = 19,885.99 × 3,896.89
4. Step 4: Simplify right side
   13,259.38x = 77,493,575.28
5. Step 5: Solve for x
   x = 77,493,575.28/13,259.38
6. Step 6: Final answer
   x = 5,844.43