Finding the Fourth Proportional to 23,643.39, 35,473.55 and 10,128.89

Step by Step Solution

1. Step 1: Write the proportion equation
   23,643.39 : 35,473.55 = 10,128.89 : x
2. Step 2: Convert to fraction form
   23,643.39/35,473.55 = 10,128.89/x
3. Step 3: Cross multiply
   23,643.39x = 35,473.55 × 10,128.89
4. Step 4: Simplify right side
   23,643.39x = 359,307,666.84
5. Step 5: Solve for x
   x = 359,307,666.84/23,643.39
6. Step 6: Final answer
   x = 15,196.96