Finding the Fourth Proportional to 9,304.47, 13,931.81 and 7,828.25

Step by Step Solution

1. Step 1: Write the proportion equation
   9,304.47 : 13,931.81 = 7,828.25 : x
2. Step 2: Convert to fraction form
   9,304.47/13,931.81 = 7,828.25/x
3. Step 3: Cross multiply
   9,304.47x = 13,931.81 × 7,828.25
4. Step 4: Simplify right side
   9,304.47x = 109,061,656.22
5. Step 5: Solve for x
   x = 109,061,656.22/9,304.47
6. Step 6: Final answer
   x = 11,721.43