Finding the Fourth Proportional to 9,994.72, 13,792.62 and 5,518.46

Step by Step Solution

1. Step 1: Write the proportion equation
   9,994.72 : 13,792.62 = 5,518.46 : x
2. Step 2: Convert to fraction form
   9,994.72/13,792.62 = 5,518.46/x
3. Step 3: Cross multiply
   9,994.72x = 13,792.62 × 5,518.46
4. Step 4: Simplify right side
   9,994.72x = 76,114,021.77
5. Step 5: Solve for x
   x = 76,114,021.77/9,994.72
6. Step 6: Final answer
   x = 7,615.42