Finding the Fourth Proportional to 13,256.34, 19,887.75 and 4,491.33

Step by Step Solution

1. Step 1: Write the proportion equation
   13,256.34 : 19,887.75 = 4,491.33 : x
2. Step 2: Convert to fraction form
   13,256.34/19,887.75 = 4,491.33/x
3. Step 3: Cross multiply
   13,256.34x = 19,887.75 × 4,491.33
4. Step 4: Simplify right side
   13,256.34x = 89,322,448.21
5. Step 5: Solve for x
   x = 89,322,448.21/13,256.34
6. Step 6: Final answer
   x = 6,738.09