Finding the Fourth Proportional to 13,111.56, 19,670.34 and 3,751.68

Step by Step Solution

1. Step 1: Write the proportion equation
   13,111.56 : 19,670.34 = 3,751.68 : x
2. Step 2: Convert to fraction form
   13,111.56/19,670.34 = 3,751.68/x
3. Step 3: Cross multiply
   13,111.56x = 19,670.34 × 3,751.68
4. Step 4: Simplify right side
   13,111.56x = 73,796,821.17
5. Step 5: Solve for x
   x = 73,796,821.17/13,111.56
6. Step 6: Final answer
   x = 5,628.38