Finding the Fourth Proportional to 10,155.86, 15,209.20 and 7,027.10

Step by Step Solution

1. Step 1: Write the proportion equation
   10,155.86 : 15,209.20 = 7,027.10 : x
2. Step 2: Convert to fraction form
   10,155.86/15,209.20 = 7,027.10/x
3. Step 3: Cross multiply
   10,155.86x = 15,209.20 × 7,027.10
4. Step 4: Simplify right side
   10,155.86x = 106,876,569.32
5. Step 5: Solve for x
   x = 106,876,569.32/10,155.86
6. Step 6: Final answer
   x = 10,523.64