Finding the Fourth Proportional to 9,899.16, 14,846.31 and 2,878.98

Step by Step Solution

1. Step 1: Write the proportion equation
   9,899.16 : 14,846.31 = 2,878.98 : x
2. Step 2: Convert to fraction form
   9,899.16/14,846.31 = 2,878.98/x
3. Step 3: Cross multiply
   9,899.16x = 14,846.31 × 2,878.98
4. Step 4: Simplify right side
   9,899.16x = 42,742,229.56
5. Step 5: Solve for x
   x = 42,742,229.56/9,899.16
6. Step 6: Final answer
   x = 4,317.76