Finding the Fourth Proportional to 9,999.94, 13,800.76 and 5,524.18

Step by Step Solution

1. Step 1: Write the proportion equation
   9,999.94 : 13,800.76 = 5,524.18 : x
2. Step 2: Convert to fraction form
   9,999.94/13,800.76 = 5,524.18/x
3. Step 3: Cross multiply
   9,999.94x = 13,800.76 × 5,524.18
4. Step 4: Simplify right side
   9,999.94x = 76,237,813.37
5. Step 5: Solve for x
   x = 76,237,813.37/9,999.94
6. Step 6: Final answer
   x = 7,623.83