Finding the Fourth Proportional to 12,900.54, 19,353.55 and 4,141.61

Step by Step Solution

1. Step 1: Write the proportion equation
   12,900.54 : 19,353.55 = 4,141.61 : x
2. Step 2: Convert to fraction form
   12,900.54/19,353.55 = 4,141.61/x
3. Step 3: Cross multiply
   12,900.54x = 19,353.55 × 4,141.61
4. Step 4: Simplify right side
   12,900.54x = 80,154,807.83
5. Step 5: Solve for x
   x = 80,154,807.83/12,900.54
6. Step 6: Final answer
   x = 6,213.29