Finding the Fourth Proportional to 11,216.07, 15,476.01 and 7,021.89

Step by Step Solution

1. Step 1: Write the proportion equation
   11,216.07 : 15,476.01 = 7,021.89 : x
2. Step 2: Convert to fraction form
   11,216.07/15,476.01 = 7,021.89/x
3. Step 3: Cross multiply
   11,216.07x = 15,476.01 × 7,021.89
4. Step 4: Simplify right side
   11,216.07x = 108,670,839.86
5. Step 5: Solve for x
   x = 108,670,839.86/11,216.07
6. Step 6: Final answer
   x = 9,688.85