Finding the Fourth Proportional to 9,933.15, 13,719.88 and 7,426.39

Step by Step Solution

1. Step 1: Write the proportion equation
   9,933.15 : 13,719.88 = 7,426.39 : x
2. Step 2: Convert to fraction form
   9,933.15/13,719.88 = 7,426.39/x
3. Step 3: Cross multiply
   9,933.15x = 13,719.88 × 7,426.39
4. Step 4: Simplify right side
   9,933.15x = 101,889,179.63
5. Step 5: Solve for x
   x = 101,889,179.63/9,933.15
6. Step 6: Final answer
   x = 10,257.49