Finding the Fourth Proportional to 21,132, 31,692.86 and 7,088.39

Step by Step Solution

1. Step 1: Write the proportion equation
   21,132 : 31,692.86 = 7,088.39 : x
2. Step 2: Convert to fraction form
   21,132/31,692.86 = 7,088.39/x
3. Step 3: Cross multiply
   21,132x = 31,692.86 × 7,088.39
4. Step 4: Simplify right side
   21,132x = 224,651,211.15
5. Step 5: Solve for x
   x = 224,651,211.15/21,132
6. Step 6: Final answer
   x = 10,630.85