Finding the Fourth Proportional to 9,460.78, 12,961.33 and 9,106.08

Step by Step Solution

1. Step 1: Write the proportion equation
   9,460.78 : 12,961.33 = 9,106.08 : x
2. Step 2: Convert to fraction form
   9,460.78/12,961.33 = 9,106.08/x
3. Step 3: Cross multiply
   9,460.78x = 12,961.33 × 9,106.08
4. Step 4: Simplify right side
   9,460.78x = 118,026,836.52
5. Step 5: Solve for x
   x = 118,026,836.52/9,460.78
6. Step 6: Final answer
   x = 12,475.38