Finding the Fourth Proportional to 19,128.69, 26,397.06 and 10,630.59

Step by Step Solution

1. Step 1: Write the proportion equation
   19,128.69 : 26,397.06 = 10,630.59 : x
2. Step 2: Convert to fraction form
   19,128.69/26,397.06 = 10,630.59/x
3. Step 3: Cross multiply
   19,128.69x = 26,397.06 × 10,630.59
4. Step 4: Simplify right side
   19,128.69x = 280,616,268.91
5. Step 5: Solve for x
   x = 280,616,268.91/19,128.69
6. Step 6: Final answer
   x = 14,669.92