Finding the Fourth Proportional to 9,131.21, 12,601.06 and 4,939.46

Step by Step Solution

1. Step 1: Write the proportion equation
   9,131.21 : 12,601.06 = 4,939.46 : x
2. Step 2: Convert to fraction form
   9,131.21/12,601.06 = 4,939.46/x
3. Step 3: Cross multiply
   9,131.21x = 12,601.06 × 4,939.46
4. Step 4: Simplify right side
   9,131.21x = 62,242,431.83
5. Step 5: Solve for x
   x = 62,242,431.83/9,131.21
6. Step 6: Final answer
   x = 6,816.45