Finding the Fourth Proportional to 9,811.06, 13,537.74 and 5,618.50

Step by Step Solution

1. Step 1: Write the proportion equation
   9,811.06 : 13,537.74 = 5,618.50 : x
2. Step 2: Convert to fraction form
   9,811.06/13,537.74 = 5,618.50/x
3. Step 3: Cross multiply
   9,811.06x = 13,537.74 × 5,618.50
4. Step 4: Simplify right side
   9,811.06x = 76,061,792.19
5. Step 5: Solve for x
   x = 76,061,792.19/9,811.06
6. Step 6: Final answer
   x = 7,752.66