Finding the Fourth Proportional to 11,885.98, 16,410.12 and 7,638.94

Step by Step Solution

1. Step 1: Write the proportion equation
   11,885.98 : 16,410.12 = 7,638.94 : x
2. Step 2: Convert to fraction form
   11,885.98/16,410.12 = 7,638.94/x
3. Step 3: Cross multiply
   11,885.98x = 16,410.12 × 7,638.94
4. Step 4: Simplify right side
   11,885.98x = 125,355,922.07
5. Step 5: Solve for x
   x = 125,355,922.07/11,885.98
6. Step 6: Final answer
   x = 10,546.54