Finding the Fourth Proportional to 6,300.81, 9,438.91 and 4,631.86

Step by Step Solution

1. Step 1: Write the proportion equation
   6,300.81 : 9,438.91 = 4,631.86 : x
2. Step 2: Convert to fraction form
   6,300.81/9,438.91 = 4,631.86/x
3. Step 3: Cross multiply
   6,300.81x = 9,438.91 × 4,631.86
4. Step 4: Simplify right side
   6,300.81x = 43,719,709.89
5. Step 5: Solve for x
   x = 43,719,709.89/6,300.81
6. Step 6: Final answer
   x = 6,938.74