Finding the Fourth Proportional to 6,810.69, 9,398.75 and 3,980.01

Step by Step Solution

1. Step 1: Write the proportion equation
   6,810.69 : 9,398.75 = 3,980.01 : x
2. Step 2: Convert to fraction form
   6,810.69/9,398.75 = 3,980.01/x
3. Step 3: Cross multiply
   6,810.69x = 9,398.75 × 3,980.01
4. Step 4: Simplify right side
   6,810.69x = 37,407,099.09
5. Step 5: Solve for x
   x = 37,407,099.09/6,810.69
6. Step 6: Final answer
   x = 5,492.41