Finding the Fourth Proportional to 10,258.58, 15,387.86 and 5,872.94

Step by Step Solution

1. Step 1: Write the proportion equation
   10,258.58 : 15,387.86 = 5,872.94 : x
2. Step 2: Convert to fraction form
   10,258.58/15,387.86 = 5,872.94/x
3. Step 3: Cross multiply
   10,258.58x = 15,387.86 × 5,872.94
4. Step 4: Simplify right side
   10,258.58x = 90,371,978.51
5. Step 5: Solve for x
   x = 90,371,978.51/10,258.58
6. Step 6: Final answer
   x = 8,809.40