Finding the Fourth Proportional to 9,333.44, 12,904.55 and 8,920.34

Step by Step Solution

1. Step 1: Write the proportion equation
   9,333.44 : 12,904.55 = 8,920.34 : x
2. Step 2: Convert to fraction form
   9,333.44/12,904.55 = 8,920.34/x
3. Step 3: Cross multiply
   9,333.44x = 12,904.55 × 8,920.34
4. Step 4: Simplify right side
   9,333.44x = 115,112,973.55
5. Step 5: Solve for x
   x = 115,112,973.55/9,333.44
6. Step 6: Final answer
   x = 12,333.39