Finding the Fourth Proportional to 6,985.69, 10,478.72 and 2,602.28

Step by Step Solution

1. Step 1: Write the proportion equation
   6,985.69 : 10,478.72 = 2,602.28 : x
2. Step 2: Convert to fraction form
   6,985.69/10,478.72 = 2,602.28/x
3. Step 3: Cross multiply
   6,985.69x = 10,478.72 × 2,602.28
4. Step 4: Simplify right side
   6,985.69x = 27,268,522.60
5. Step 5: Solve for x
   x = 27,268,522.60/6,985.69
6. Step 6: Final answer
   x = 3,903.48