Finding the Fourth Proportional to 11,528.76, 15,912.27 and 7,547.55

Step by Step Solution

1. Step 1: Write the proportion equation
   11,528.76 : 15,912.27 = 7,547.55 : x
2. Step 2: Convert to fraction form
   11,528.76/15,912.27 = 7,547.55/x
3. Step 3: Cross multiply
   11,528.76x = 15,912.27 × 7,547.55
4. Step 4: Simplify right side
   11,528.76x = 120,098,749.25
5. Step 5: Solve for x
   x = 120,098,749.25/11,528.76
6. Step 6: Final answer
   x = 10,417.32