Finding the Fourth Proportional to 12,691.77, 17,513.87 and 7,025.01

Step by Step Solution

1. Step 1: Write the proportion equation
   12,691.77 : 17,513.87 = 7,025.01 : x
2. Step 2: Convert to fraction form
   12,691.77/17,513.87 = 7,025.01/x
3. Step 3: Cross multiply
   12,691.77x = 17,513.87 × 7,025.01
4. Step 4: Simplify right side
   12,691.77x = 123,035,076.76
5. Step 5: Solve for x
   x = 123,035,076.76/12,691.77
6. Step 6: Final answer
   x = 9,694.08