Finding the Fourth Proportional to 12,870.14, 19,302.82 and 3,983.81

Step by Step Solution

1. Step 1: Write the proportion equation
   12,870.14 : 19,302.82 = 3,983.81 : x
2. Step 2: Convert to fraction form
   12,870.14/19,302.82 = 3,983.81/x
3. Step 3: Cross multiply
   12,870.14x = 19,302.82 × 3,983.81
4. Step 4: Simplify right side
   12,870.14x = 76,898,861.82
5. Step 5: Solve for x
   x = 76,898,861.82/12,870.14
6. Step 6: Final answer
   x = 5,974.98