Finding the Fourth Proportional to 9,892.07, 13,650.99 and 5,415.89

Step by Step Solution

1. Step 1: Write the proportion equation
   9,892.07 : 13,650.99 = 5,415.89 : x
2. Step 2: Convert to fraction form
   9,892.07/13,650.99 = 5,415.89/x
3. Step 3: Cross multiply
   9,892.07x = 13,650.99 × 5,415.89
4. Step 4: Simplify right side
   9,892.07x = 73,932,233.15
5. Step 5: Solve for x
   x = 73,932,233.15/9,892.07
6. Step 6: Final answer
   x = 7,473.89