Finding the Fourth Proportional to 11,897.89, 16,420.73 and 9,061.27

Step by Step Solution

1. Step 1: Write the proportion equation
   11,897.89 : 16,420.73 = 9,061.27 : x
2. Step 2: Convert to fraction form
   11,897.89/16,420.73 = 9,061.27/x
3. Step 3: Cross multiply
   11,897.89x = 16,420.73 × 9,061.27
4. Step 4: Simplify right side
   11,897.89x = 148,792,581.77
5. Step 5: Solve for x
   x = 148,792,581.77/11,897.89
6. Step 6: Final answer
   x = 12,505.80