Finding the Fourth Proportional to 9,741.78, 13,445.28 and 5,710.86

Step by Step Solution

1. Step 1: Write the proportion equation
   9,741.78 : 13,445.28 = 5,710.86 : x
2. Step 2: Convert to fraction form
   9,741.78/13,445.28 = 5,710.86/x
3. Step 3: Cross multiply
   9,741.78x = 13,445.28 × 5,710.86
4. Step 4: Simplify right side
   9,741.78x = 76,784,111.74
5. Step 5: Solve for x
   x = 76,784,111.74/9,741.78
6. Step 6: Final answer
   x = 7,881.94