Finding the Fourth Proportional to 9,487.86, 13,091.76 and 5,508.18

Step by Step Solution

1. Step 1: Write the proportion equation
   9,487.86 : 13,091.76 = 5,508.18 : x
2. Step 2: Convert to fraction form
   9,487.86/13,091.76 = 5,508.18/x
3. Step 3: Cross multiply
   9,487.86x = 13,091.76 × 5,508.18
4. Step 4: Simplify right side
   9,487.86x = 72,111,770.60
5. Step 5: Solve for x
   x = 72,111,770.60/9,487.86
6. Step 6: Final answer
   x = 7,600.43