Finding the Fourth Proportional to 11,258.87, 15,540.86 and 7,276.91

Step by Step Solution

1. Step 1: Write the proportion equation
   11,258.87 : 15,540.86 = 7,276.91 : x
2. Step 2: Convert to fraction form
   11,258.87/15,540.86 = 7,276.91/x
3. Step 3: Cross multiply
   11,258.87x = 15,540.86 × 7,276.91
4. Step 4: Simplify right side
   11,258.87x = 113,089,380.03
5. Step 5: Solve for x
   x = 113,089,380.03/11,258.87
6. Step 6: Final answer
   x = 10,044.47