Finding the Fourth Proportional to 13,132.72, 19,697.64 and 3,898

Step by Step Solution

1. Step 1: Write the proportion equation
   13,132.72 : 19,697.64 = 3,898 : x
2. Step 2: Convert to fraction form
   13,132.72/19,697.64 = 3,898/x
3. Step 3: Cross multiply
   13,132.72x = 19,697.64 × 3,898
4. Step 4: Simplify right side
   13,132.72x = 76,781,400.72
5. Step 5: Solve for x
   x = 76,781,400.72/13,132.72
6. Step 6: Final answer
   x = 5,846.57