Finding the Fourth Proportional to 13,190.01, 19,788.18 and 5,398.83

Step by Step Solution

1. Step 1: Write the proportion equation
   13,190.01 : 19,788.18 = 5,398.83 : x
2. Step 2: Convert to fraction form
   13,190.01/19,788.18 = 5,398.83/x
3. Step 3: Cross multiply
   13,190.01x = 19,788.18 × 5,398.83
4. Step 4: Simplify right side
   13,190.01x = 106,833,019.83
5. Step 5: Solve for x
   x = 106,833,019.83/13,190.01
6. Step 6: Final answer
   x = 8,099.54