Finding the Fourth Proportional to 7,812.30, 10,780.83 and 4,275.42

Step by Step Solution

1. Step 1: Write the proportion equation
   7,812.30 : 10,780.83 = 4,275.42 : x
2. Step 2: Convert to fraction form
   7,812.30/10,780.83 = 4,275.42/x
3. Step 3: Cross multiply
   7,812.30x = 10,780.83 × 4,275.42
4. Step 4: Simplify right side
   7,812.30x = 46,092,576.20
5. Step 5: Solve for x
   x = 46,092,576.20/7,812.30
6. Step 6: Final answer
   x = 5,900.00