Finding the Fourth Proportional to 9,919.08, 14,878.89 and 2,899.89

Step by Step Solution

1. Step 1: Write the proportion equation
   9,919.08 : 14,878.89 = 2,899.89 : x
2. Step 2: Convert to fraction form
   9,919.08/14,878.89 = 2,899.89/x
3. Step 3: Cross multiply
   9,919.08x = 14,878.89 × 2,899.89
4. Step 4: Simplify right side
   9,919.08x = 43,147,144.32
5. Step 5: Solve for x
   x = 43,147,144.32/9,919.08
6. Step 6: Final answer
   x = 4,349.91