Finding the Fourth Proportional to 11,011.55, 15,196.01 and 7,230.47

Step by Step Solution

1. Step 1: Write the proportion equation
   11,011.55 : 15,196.01 = 7,230.47 : x
2. Step 2: Convert to fraction form
   11,011.55/15,196.01 = 7,230.47/x
3. Step 3: Cross multiply
   11,011.55x = 15,196.01 × 7,230.47
4. Step 4: Simplify right side
   11,011.55x = 109,874,182.29
5. Step 5: Solve for x
   x = 109,874,182.29/11,011.55
6. Step 6: Final answer
   x = 9,978.09