Finding the Fourth Proportional to 13,317.83, 19,971.54 and 4,993.30

Step by Step Solution

1. Step 1: Write the proportion equation
   13,317.83 : 19,971.54 = 4,993.30 : x
2. Step 2: Convert to fraction form
   13,317.83/19,971.54 = 4,993.30/x
3. Step 3: Cross multiply
   13,317.83x = 19,971.54 × 4,993.30
4. Step 4: Simplify right side
   13,317.83x = 99,723,790.82
5. Step 5: Solve for x
   x = 99,723,790.82/13,317.83
6. Step 6: Final answer
   x = 7,487.99