Finding the Fourth Proportional to 13,111.69, 19,663.28 and 4,344.25

Step by Step Solution

1. Step 1: Write the proportion equation
   13,111.69 : 19,663.28 = 4,344.25 : x
2. Step 2: Convert to fraction form
   13,111.69/19,663.28 = 4,344.25/x
3. Step 3: Cross multiply
   13,111.69x = 19,663.28 × 4,344.25
4. Step 4: Simplify right side
   13,111.69x = 85,422,215.00
5. Step 5: Solve for x
   x = 85,422,215.00/13,111.69
6. Step 6: Final answer
   x = 6,514.97