Finding the Fourth Proportional to 9,921.88, 14,885.72 and 4,732.12

Step by Step Solution

1. Step 1: Write the proportion equation
   9,921.88 : 14,885.72 = 4,732.12 : x
2. Step 2: Convert to fraction form
   9,921.88/14,885.72 = 4,732.12/x
3. Step 3: Cross multiply
   9,921.88x = 14,885.72 × 4,732.12
4. Step 4: Simplify right side
   9,921.88x = 70,441,013.33
5. Step 5: Solve for x
   x = 70,441,013.33/9,921.88
6. Step 6: Final answer
   x = 7,099.56