Finding the Fourth Proportional to 9,354.33, 12,908.89 and 5,105.47

Step by Step Solution

1. Step 1: Write the proportion equation
   9,354.33 : 12,908.89 = 5,105.47 : x
2. Step 2: Convert to fraction form
   9,354.33/12,908.89 = 5,105.47/x
3. Step 3: Cross multiply
   9,354.33x = 12,908.89 × 5,105.47
4. Step 4: Simplify right side
   9,354.33x = 65,905,950.63
5. Step 5: Solve for x
   x = 65,905,950.63/9,354.33
6. Step 6: Final answer
   x = 7,045.50