Finding the Fourth Proportional to 9,736.80, 13,436.62 and 5,487.86

Step by Step Solution

1. Step 1: Write the proportion equation
   9,736.80 : 13,436.62 = 5,487.86 : x
2. Step 2: Convert to fraction form
   9,736.80/13,436.62 = 5,487.86/x
3. Step 3: Cross multiply
   9,736.80x = 13,436.62 × 5,487.86
4. Step 4: Simplify right side
   9,736.80x = 73,738,289.43
5. Step 5: Solve for x
   x = 73,738,289.43/9,736.80
6. Step 6: Final answer
   x = 7,573.15