Finding the Fourth Proportional to 9,994.32, 13,791.96 and 5,517.80

Step by Step Solution

1. Step 1: Write the proportion equation
   9,994.32 : 13,791.96 = 5,517.80 : x
2. Step 2: Convert to fraction form
   9,994.32/13,791.96 = 5,517.80/x
3. Step 3: Cross multiply
   9,994.32x = 13,791.96 × 5,517.80
4. Step 4: Simplify right side
   9,994.32x = 76,101,276.89
5. Step 5: Solve for x
   x = 76,101,276.89/9,994.32
6. Step 6: Final answer
   x = 7,614.45