Finding the Fourth Proportional to 9,994.55, 13,792.50 and 5,518.31

Step by Step Solution

1. Step 1: Write the proportion equation
   9,994.55 : 13,792.50 = 5,518.31 : x
2. Step 2: Convert to fraction form
   9,994.55/13,792.50 = 5,518.31/x
3. Step 3: Cross multiply
   9,994.55x = 13,792.50 × 5,518.31
4. Step 4: Simplify right side
   9,994.55x = 76,111,345.85
5. Step 5: Solve for x
   x = 76,111,345.85/9,994.55
6. Step 6: Final answer
   x = 7,615.28