Finding the Fourth Proportional to 6,431.13, 8,875.02 and 3,778.59

Step by Step Solution

1. Step 1: Write the proportion equation
   6,431.13 : 8,875.02 = 3,778.59 : x
2. Step 2: Convert to fraction form
   6,431.13/8,875.02 = 3,778.59/x
3. Step 3: Cross multiply
   6,431.13x = 8,875.02 × 3,778.59
4. Step 4: Simplify right side
   6,431.13x = 33,535,061.82
5. Step 5: Solve for x
   x = 33,535,061.82/6,431.13
6. Step 6: Final answer
   x = 5,214.49