Finding the Fourth Proportional to 11,285.67, 15,570.86 and 7,300.47

Step by Step Solution

1. Step 1: Write the proportion equation
   11,285.67 : 15,570.86 = 7,300.47 : x
2. Step 2: Convert to fraction form
   11,285.67/15,570.86 = 7,300.47/x
3. Step 3: Cross multiply
   11,285.67x = 15,570.86 × 7,300.47
4. Step 4: Simplify right side
   11,285.67x = 113,674,559.80
5. Step 5: Solve for x
   x = 113,674,559.80/11,285.67
6. Step 6: Final answer
   x = 10,072.47