Finding the Fourth Proportional to 6,912.83, 10,372.89 and 4,145.06

Step by Step Solution

1. Step 1: Write the proportion equation
   6,912.83 : 10,372.89 = 4,145.06 : x
2. Step 2: Convert to fraction form
   6,912.83/10,372.89 = 4,145.06/x
3. Step 3: Cross multiply
   6,912.83x = 10,372.89 × 4,145.06
4. Step 4: Simplify right side
   6,912.83x = 42,996,199.56
5. Step 5: Solve for x
   x = 42,996,199.56/6,912.83
6. Step 6: Final answer
   x = 6,219.77