Finding the Fourth Proportional to 11,333.39, 15,642.31 and 7,242.58

Step by Step Solution

1. Step 1: Write the proportion equation
   11,333.39 : 15,642.31 = 7,242.58 : x
2. Step 2: Convert to fraction form
   11,333.39/15,642.31 = 7,242.58/x
3. Step 3: Cross multiply
   11,333.39x = 15,642.31 × 7,242.58
4. Step 4: Simplify right side
   11,333.39x = 113,290,681.56
5. Step 5: Solve for x
   x = 113,290,681.56/11,333.39
6. Step 6: Final answer
   x = 9,996.19