Finding the Fourth Proportional to 10,292.32, 15,436.05 and 4,742.20

Step by Step Solution

1. Step 1: Write the proportion equation
   10,292.32 : 15,436.05 = 4,742.20 : x
2. Step 2: Convert to fraction form
   10,292.32/15,436.05 = 4,742.20/x
3. Step 3: Cross multiply
   10,292.32x = 15,436.05 × 4,742.20
4. Step 4: Simplify right side
   10,292.32x = 73,200,836.31
5. Step 5: Solve for x
   x = 73,200,836.31/10,292.32
6. Step 6: Final answer
   x = 7,112.18