Finding the Fourth Proportional to 7,009.07, 10,513.89 and 2,078.60

Step by Step Solution

1. Step 1: Write the proportion equation
   7,009.07 : 10,513.89 = 2,078.60 : x
2. Step 2: Convert to fraction form
   7,009.07/10,513.89 = 2,078.60/x
3. Step 3: Cross multiply
   7,009.07x = 10,513.89 × 2,078.60
4. Step 4: Simplify right side
   7,009.07x = 21,854,171.75
5. Step 5: Solve for x
   x = 21,854,171.75/7,009.07
6. Step 6: Final answer
   x = 3,117.98