Finding the Fourth Proportional to 10,215.32, 15,326.28 and 5,017.55

Step by Step Solution

1. Step 1: Write the proportion equation
   10,215.32 : 15,326.28 = 5,017.55 : x
2. Step 2: Convert to fraction form
   10,215.32/15,326.28 = 5,017.55/x
3. Step 3: Cross multiply
   10,215.32x = 15,326.28 × 5,017.55
4. Step 4: Simplify right side
   10,215.32x = 76,900,376.21
5. Step 5: Solve for x
   x = 76,900,376.21/10,215.32
6. Step 6: Final answer
   x = 7,527.95