Finding the Fourth Proportional to 12,820.46, 17,687.50 and 7,513.34

Step by Step Solution

1. Step 1: Write the proportion equation
   12,820.46 : 17,687.50 = 7,513.34 : x
2. Step 2: Convert to fraction form
   12,820.46/17,687.50 = 7,513.34/x
3. Step 3: Cross multiply
   12,820.46x = 17,687.50 × 7,513.34
4. Step 4: Simplify right side
   12,820.46x = 132,892,094.03
5. Step 5: Solve for x
   x = 132,892,094.03/12,820.46
6. Step 6: Final answer
   x = 10,365.63