Finding the Fourth Proportional to 8,998.30, 12,417.50 and 5,019.31

Step by Step Solution

1. Step 1: Write the proportion equation
   8,998.30 : 12,417.50 = 5,019.31 : x
2. Step 2: Convert to fraction form
   8,998.30/12,417.50 = 5,019.31/x
3. Step 3: Cross multiply
   8,998.30x = 12,417.50 × 5,019.31
4. Step 4: Simplify right side
   8,998.30x = 62,327,219.84
5. Step 5: Solve for x
   x = 62,327,219.84/8,998.30
6. Step 6: Final answer
   x = 6,926.56