Finding the Fourth Proportional to 17,130.69, 23,663.61 and 12,913.83

Step by Step Solution

1. Step 1: Write the proportion equation
   17,130.69 : 23,663.61 = 12,913.83 : x
2. Step 2: Convert to fraction form
   17,130.69/23,663.61 = 12,913.83/x
3. Step 3: Cross multiply
   17,130.69x = 23,663.61 × 12,913.83
4. Step 4: Simplify right side
   17,130.69x = 305,587,836.73
5. Step 5: Solve for x
   x = 305,587,836.73/17,130.69
6. Step 6: Final answer
   x = 17,838.62