Finding the Fourth Proportional to 13,256.79, 19,883.89 and 4,491.24

Step by Step Solution

1. Step 1: Write the proportion equation
   13,256.79 : 19,883.89 = 4,491.24 : x
2. Step 2: Convert to fraction form
   13,256.79/19,883.89 = 4,491.24/x
3. Step 3: Cross multiply
   13,256.79x = 19,883.89 × 4,491.24
4. Step 4: Simplify right side
   13,256.79x = 89,303,322.12
5. Step 5: Solve for x
   x = 89,303,322.12/13,256.79
6. Step 6: Final answer
   x = 6,736.42