Finding the Fourth Proportional to 13,263.72, 19,891.37 and 4,496.58

Step by Step Solution

1. Step 1: Write the proportion equation
   13,263.72 : 19,891.37 = 4,496.58 : x
2. Step 2: Convert to fraction form
   13,263.72/19,891.37 = 4,496.58/x
3. Step 3: Cross multiply
   13,263.72x = 19,891.37 × 4,496.58
4. Step 4: Simplify right side
   13,263.72x = 89,443,136.51
5. Step 5: Solve for x
   x = 89,443,136.51/13,263.72
6. Step 6: Final answer
   x = 6,743.44