Finding the Fourth Proportional to 7,131.30, 10,672.65 and 7,131.30

Step by Step Solution

1. Step 1: Write the proportion equation
   7,131.30 : 10,672.65 = 7,131.30 : x
2. Step 2: Convert to fraction form
   7,131.30/10,672.65 = 7,131.30/x
3. Step 3: Cross multiply
   7,131.30x = 10,672.65 × 7,131.30
4. Step 4: Simplify right side
   7,131.30x = 76,109,868.95
5. Step 5: Solve for x
   x = 76,109,868.95/7,131.30
6. Step 6: Final answer
   x = 10,672.65