Finding the Fourth Proportional to 9,904.25, 13,667.94 and 5,428.41

Step by Step Solution

1. Step 1: Write the proportion equation
   9,904.25 : 13,667.94 = 5,428.41 : x
2. Step 2: Convert to fraction form
   9,904.25/13,667.94 = 5,428.41/x
3. Step 3: Cross multiply
   9,904.25x = 13,667.94 × 5,428.41
4. Step 4: Simplify right side
   9,904.25x = 74,195,182.18
5. Step 5: Solve for x
   x = 74,195,182.18/9,904.25
6. Step 6: Final answer
   x = 7,491.25