Finding the Fourth Proportional to 11,150.07, 15,388.43 and 6,434.25

Step by Step Solution

1. Step 1: Write the proportion equation
   11,150.07 : 15,388.43 = 6,434.25 : x
2. Step 2: Convert to fraction form
   11,150.07/15,388.43 = 6,434.25/x
3. Step 3: Cross multiply
   11,150.07x = 15,388.43 × 6,434.25
4. Step 4: Simplify right side
   11,150.07x = 99,012,973.56
5. Step 5: Solve for x
   x = 99,012,973.56/11,150.07
6. Step 6: Final answer
   x = 8,880.03