Finding the Fourth Proportional to 7,870.52, 11,803.88 and 3,485.54

Step by Step Solution

1. Step 1: Write the proportion equation
   7,870.52 : 11,803.88 = 3,485.54 : x
2. Step 2: Convert to fraction form
   7,870.52/11,803.88 = 3,485.54/x
3. Step 3: Cross multiply
   7,870.52x = 11,803.88 × 3,485.54
4. Step 4: Simplify right side
   7,870.52x = 41,142,895.90
5. Step 5: Solve for x
   x = 41,142,895.90/7,870.52
6. Step 6: Final answer
   x = 5,227.47