Finding the Fourth Proportional to 9,152.78, 12,630.86 and 4,961.03

Step by Step Solution

1. Step 1: Write the proportion equation
   9,152.78 : 12,630.86 = 4,961.03 : x
2. Step 2: Convert to fraction form
   9,152.78/12,630.86 = 4,961.03/x
3. Step 3: Cross multiply
   9,152.78x = 12,630.86 × 4,961.03
4. Step 4: Simplify right side
   9,152.78x = 62,662,119.37
5. Step 5: Solve for x
   x = 62,662,119.37/9,152.78
6. Step 6: Final answer
   x = 6,846.24