Finding the Fourth Proportional to 9,486.90, 13,091.90 and 5,510.34

Step by Step Solution

1. Step 1: Write the proportion equation
   9,486.90 : 13,091.90 = 5,510.34 : x
2. Step 2: Convert to fraction form
   9,486.90/13,091.90 = 5,510.34/x
3. Step 3: Cross multiply
   9,486.90x = 13,091.90 × 5,510.34
4. Step 4: Simplify right side
   9,486.90x = 72,140,792.69
5. Step 5: Solve for x
   x = 72,140,792.69/9,486.90
6. Step 6: Final answer
   x = 7,604.25