Finding the Fourth Proportional to 11,019.52, 15,200.16 and 7,870.24

Step by Step Solution

1. Step 1: Write the proportion equation
   11,019.52 : 15,200.16 = 7,870.24 : x
2. Step 2: Convert to fraction form
   11,019.52/15,200.16 = 7,870.24/x
3. Step 3: Cross multiply
   11,019.52x = 15,200.16 × 7,870.24
4. Step 4: Simplify right side
   11,019.52x = 119,628,907.24
5. Step 5: Solve for x
   x = 119,628,907.24/11,019.52
6. Step 6: Final answer
   x = 10,856.09