Finding the Fourth Proportional to 9,900.67, 14,851.27 and 2,880.40

Step by Step Solution

1. Step 1: Write the proportion equation
   9,900.67 : 14,851.27 = 2,880.40 : x
2. Step 2: Convert to fraction form
   9,900.67/14,851.27 = 2,880.40/x
3. Step 3: Cross multiply
   9,900.67x = 14,851.27 × 2,880.40
4. Step 4: Simplify right side
   9,900.67x = 42,777,598.11
5. Step 5: Solve for x
   x = 42,777,598.11/9,900.67
6. Step 6: Final answer
   x = 4,320.68