Finding the Fourth Proportional to 10,889.05, 15,031.49 and 7,357.05

Step by Step Solution

1. Step 1: Write the proportion equation
   10,889.05 : 15,031.49 = 7,357.05 : x
2. Step 2: Convert to fraction form
   10,889.05/15,031.49 = 7,357.05/x
3. Step 3: Cross multiply
   10,889.05x = 15,031.49 × 7,357.05
4. Step 4: Simplify right side
   10,889.05x = 110,587,423.50
5. Step 5: Solve for x
   x = 110,587,423.50/10,889.05
6. Step 6: Final answer
   x = 10,155.84