Finding the Fourth Proportional to 11,945.63, 17,918.15 and 5,710.05

Step by Step Solution

1. Step 1: Write the proportion equation
   11,945.63 : 17,918.15 = 5,710.05 : x
2. Step 2: Convert to fraction form
   11,945.63/17,918.15 = 5,710.05/x
3. Step 3: Cross multiply
   11,945.63x = 17,918.15 × 5,710.05
4. Step 4: Simplify right side
   11,945.63x = 102,313,503.86
5. Step 5: Solve for x
   x = 102,313,503.86/11,945.63
6. Step 6: Final answer
   x = 8,564.93