Finding the Fourth Proportional to 11,922.88, 17,880.12 and 4,900.84

Step by Step Solution

1. Step 1: Write the proportion equation
   11,922.88 : 17,880.12 = 4,900.84 : x
2. Step 2: Convert to fraction form
   11,922.88/17,880.12 = 4,900.84/x
3. Step 3: Cross multiply
   11,922.88x = 17,880.12 × 4,900.84
4. Step 4: Simplify right side
   11,922.88x = 87,627,607.30
5. Step 5: Solve for x
   x = 87,627,607.30/11,922.88
6. Step 6: Final answer
   x = 7,349.53