Finding the Fourth Proportional to 9,994.96, 13,792.97 and 5,518.72

Step by Step Solution

1. Step 1: Write the proportion equation
   9,994.96 : 13,792.97 = 5,518.72 : x
2. Step 2: Convert to fraction form
   9,994.96/13,792.97 = 5,518.72/x
3. Step 3: Cross multiply
   9,994.96x = 13,792.97 × 5,518.72
4. Step 4: Simplify right side
   9,994.96x = 76,119,539.40
5. Step 5: Solve for x
   x = 76,119,539.40/9,994.96
6. Step 6: Final answer
   x = 7,615.79