Finding the Fourth Proportional to 15,875.33, 21,908.84 and 8,801.60

Step by Step Solution

1. Step 1: Write the proportion equation
   15,875.33 : 21,908.84 = 8,801.60 : x
2. Step 2: Convert to fraction form
   15,875.33/21,908.84 = 8,801.60/x
3. Step 3: Cross multiply
   15,875.33x = 21,908.84 × 8,801.60
4. Step 4: Simplify right side
   15,875.33x = 192,832,692.59
5. Step 5: Solve for x
   x = 192,832,692.59/15,875.33
6. Step 6: Final answer
   x = 12,146.69