Finding the Fourth Proportional to 13,168.13, 19,748.61 and 5,770.78

Step by Step Solution

1. Step 1: Write the proportion equation
   13,168.13 : 19,748.61 = 5,770.78 : x
2. Step 2: Convert to fraction form
   13,168.13/19,748.61 = 5,770.78/x
3. Step 3: Cross multiply
   13,168.13x = 19,748.61 × 5,770.78
4. Step 4: Simplify right side
   13,168.13x = 113,964,792.59
5. Step 5: Solve for x
   x = 113,964,792.59/13,168.13
6. Step 6: Final answer
   x = 8,654.59