Finding the Fourth Proportional to 13,268.82, 19,907.31 and 7,429.56

Step by Step Solution

1. Step 1: Write the proportion equation
   13,268.82 : 19,907.31 = 7,429.56 : x
2. Step 2: Convert to fraction form
   13,268.82/19,907.31 = 7,429.56/x
3. Step 3: Cross multiply
   13,268.82x = 19,907.31 × 7,429.56
4. Step 4: Simplify right side
   13,268.82x = 147,902,554.08
5. Step 5: Solve for x
   x = 147,902,554.08/13,268.82
6. Step 6: Final answer
   x = 11,146.62