Finding the Fourth Proportional to 7,026.72, 10,538.46 and 3,129

Step by Step Solution

1. Step 1: Write the proportion equation
   7,026.72 : 10,538.46 = 3,129 : x
2. Step 2: Convert to fraction form
   7,026.72/10,538.46 = 3,129/x
3. Step 3: Cross multiply
   7,026.72x = 10,538.46 × 3,129
4. Step 4: Simplify right side
   7,026.72x = 32,974,841.34
5. Step 5: Solve for x
   x = 32,974,841.34/7,026.72
6. Step 6: Final answer
   x = 4,692.78