Finding the Fourth Proportional to 19,628.33, 29,434.59 and 7,145.42

Step by Step Solution

1. Step 1: Write the proportion equation
   19,628.33 : 29,434.59 = 7,145.42 : x
2. Step 2: Convert to fraction form
   19,628.33/29,434.59 = 7,145.42/x
3. Step 3: Cross multiply
   19,628.33x = 29,434.59 × 7,145.42
4. Step 4: Simplify right side
   19,628.33x = 210,322,360.90
5. Step 5: Solve for x
   x = 210,322,360.90/19,628.33
6. Step 6: Final answer
   x = 10,715.25