Finding the Fourth Proportional to 11,058.76, 15,259.50 and 7,880.32

Step by Step Solution

1. Step 1: Write the proportion equation
   11,058.76 : 15,259.50 = 7,880.32 : x
2. Step 2: Convert to fraction form
   11,058.76/15,259.50 = 7,880.32/x
3. Step 3: Cross multiply
   11,058.76x = 15,259.50 × 7,880.32
4. Step 4: Simplify right side
   11,058.76x = 120,249,743.04
5. Step 5: Solve for x
   x = 120,249,743.04/11,058.76
6. Step 6: Final answer
   x = 10,873.71