Finding the Fourth Proportional to 9,748.78, 13,451.34 and 5,770.47

Step by Step Solution

1. Step 1: Write the proportion equation
   9,748.78 : 13,451.34 = 5,770.47 : x
2. Step 2: Convert to fraction form
   9,748.78/13,451.34 = 5,770.47/x
3. Step 3: Cross multiply
   9,748.78x = 13,451.34 × 5,770.47
4. Step 4: Simplify right side
   9,748.78x = 77,620,553.93
5. Step 5: Solve for x
   x = 77,620,553.93/9,748.78
6. Step 6: Final answer
   x = 7,962.08