Finding the Fourth Proportional to 9,487.68, 13,091.52 and 5,710.56

Step by Step Solution

1. Step 1: Write the proportion equation
   9,487.68 : 13,091.52 = 5,710.56 : x
2. Step 2: Convert to fraction form
   9,487.68/13,091.52 = 5,710.56/x
3. Step 3: Cross multiply
   9,487.68x = 13,091.52 × 5,710.56
4. Step 4: Simplify right side
   9,487.68x = 74,759,910.45
5. Step 5: Solve for x
   x = 74,759,910.45/9,487.68
6. Step 6: Final answer
   x = 7,879.68