Finding the Fourth Proportional to 7,870.01, 11,805.77 and 3,485.07

Step by Step Solution

1. Step 1: Write the proportion equation
   7,870.01 : 11,805.77 = 3,485.07 : x
2. Step 2: Convert to fraction form
   7,870.01/11,805.77 = 3,485.07/x
3. Step 3: Cross multiply
   7,870.01x = 11,805.77 × 3,485.07
4. Step 4: Simplify right side
   7,870.01x = 41,143,917.43
5. Step 5: Solve for x
   x = 41,143,917.43/7,870.01
6. Step 6: Final answer
   x = 5,227.94