Finding the Fourth Proportional to 16,453.33, 22,705.79 and 9,991.13

Step by Step Solution

1. Step 1: Write the proportion equation
   16,453.33 : 22,705.79 = 9,991.13 : x
2. Step 2: Convert to fraction form
   16,453.33/22,705.79 = 9,991.13/x
3. Step 3: Cross multiply
   16,453.33x = 22,705.79 × 9,991.13
4. Step 4: Simplify right side
   16,453.33x = 226,856,449.69
5. Step 5: Solve for x
   x = 226,856,449.69/16,453.33
6. Step 6: Final answer
   x = 13,787.88