Finding the Fourth Proportional to 12,913, 17,821.83 and 7,610.74

Step by Step Solution

1. Step 1: Write the proportion equation
   12,913 : 17,821.83 = 7,610.74 : x
2. Step 2: Convert to fraction form
   12,913/17,821.83 = 7,610.74/x
3. Step 3: Cross multiply
   12,913x = 17,821.83 × 7,610.74
4. Step 4: Simplify right side
   12,913x = 135,637,314.45
5. Step 5: Solve for x
   x = 135,637,314.45/12,913
6. Step 6: Final answer
   x = 10,503.94