Finding the Fourth Proportional to 12,601.12, 18,900.96 and 4,810.72

Step by Step Solution

1. Step 1: Write the proportion equation
   12,601.12 : 18,900.96 = 4,810.72 : x
2. Step 2: Convert to fraction form
   12,601.12/18,900.96 = 4,810.72/x
3. Step 3: Cross multiply
   12,601.12x = 18,900.96 × 4,810.72
4. Step 4: Simplify right side
   12,601.12x = 90,927,226.29
5. Step 5: Solve for x
   x = 90,927,226.29/12,601.12
6. Step 6: Final answer
   x = 7,215.81