Finding the Fourth Proportional to 7,870.55, 11,805.86 and 2,940.14

Step by Step Solution

1. Step 1: Write the proportion equation
   7,870.55 : 11,805.86 = 2,940.14 : x
2. Step 2: Convert to fraction form
   7,870.55/11,805.86 = 2,940.14/x
3. Step 3: Cross multiply
   7,870.55x = 11,805.86 × 2,940.14
4. Step 4: Simplify right side
   7,870.55x = 34,710,896.03
5. Step 5: Solve for x
   x = 34,710,896.03/7,870.55
6. Step 6: Final answer
   x = 4,410.23