Finding the Fourth Proportional to 13,111.39, 19,663.98 and 3,751.12

Step by Step Solution

1. Step 1: Write the proportion equation
   13,111.39 : 19,663.98 = 3,751.12 : x
2. Step 2: Convert to fraction form
   13,111.39/19,663.98 = 3,751.12/x
3. Step 3: Cross multiply
   13,111.39x = 19,663.98 × 3,751.12
4. Step 4: Simplify right side
   13,111.39x = 73,761,948.66
5. Step 5: Solve for x
   x = 73,761,948.66/13,111.39
6. Step 6: Final answer
   x = 5,625.79