Finding the Fourth Proportional to 13,866.18, 19,133.60 and 7,897.09

Step by Step Solution

1. Step 1: Write the proportion equation
   13,866.18 : 19,133.60 = 7,897.09 : x
2. Step 2: Convert to fraction form
   13,866.18/19,133.60 = 7,897.09/x
3. Step 3: Cross multiply
   13,866.18x = 19,133.60 × 7,897.09
4. Step 4: Simplify right side
   13,866.18x = 151,099,761.22
5. Step 5: Solve for x
   x = 151,099,761.22/13,866.18
6. Step 6: Final answer
   x = 10,897.00