Finding the Fourth Proportional to 11,013.81, 15,200.63 and 7,247.89

Step by Step Solution

1. Step 1: Write the proportion equation
   11,013.81 : 15,200.63 = 7,247.89 : x
2. Step 2: Convert to fraction form
   11,013.81/15,200.63 = 7,247.89/x
3. Step 3: Cross multiply
   11,013.81x = 15,200.63 × 7,247.89
4. Step 4: Simplify right side
   11,013.81x = 110,172,494.17
5. Step 5: Solve for x
   x = 110,172,494.17/11,013.81
6. Step 6: Final answer
   x = 10,003.12