Finding the Fourth Proportional to 10,947.30, 15,101.30 and 9,528.49

Step by Step Solution

1. Step 1: Write the proportion equation
   10,947.30 : 15,101.30 = 9,528.49 : x
2. Step 2: Convert to fraction form
   10,947.30/15,101.30 = 9,528.49/x
3. Step 3: Cross multiply
   10,947.30x = 15,101.30 × 9,528.49
4. Step 4: Simplify right side
   10,947.30x = 143,892,543.79
5. Step 5: Solve for x
   x = 143,892,543.79/10,947.30
6. Step 6: Final answer
   x = 13,144.11