Finding the Fourth Proportional to 11,870.56, 17,799.26 and 4,855.50

Step by Step Solution

1. Step 1: Write the proportion equation
   11,870.56 : 17,799.26 = 4,855.50 : x
2. Step 2: Convert to fraction form
   11,870.56/17,799.26 = 4,855.50/x
3. Step 3: Cross multiply
   11,870.56x = 17,799.26 × 4,855.50
4. Step 4: Simplify right side
   11,870.56x = 86,424,273.56
5. Step 5: Solve for x
   x = 86,424,273.56/11,870.56
6. Step 6: Final answer
   x = 7,280.56