Finding the Fourth Proportional to 9,873.99, 13,626.50 and 5,398.07

Step by Step Solution

1. Step 1: Write the proportion equation
   9,873.99 : 13,626.50 = 5,398.07 : x
2. Step 2: Convert to fraction form
   9,873.99/13,626.50 = 5,398.07/x
3. Step 3: Cross multiply
   9,873.99x = 13,626.50 × 5,398.07
4. Step 4: Simplify right side
   9,873.99x = 73,556,705.73
5. Step 5: Solve for x
   x = 73,556,705.73/9,873.99
6. Step 6: Final answer
   x = 7,449.54