Finding the Fourth Proportional to 12,697.35, 17,531.00 and 7,919.16

Step by Step Solution

1. Step 1: Write the proportion equation
   12,697.35 : 17,531.00 = 7,919.16 : x
2. Step 2: Convert to fraction form
   12,697.35/17,531.00 = 7,919.16/x
3. Step 3: Cross multiply
   12,697.35x = 17,531.00 × 7,919.16
4. Step 4: Simplify right side
   12,697.35x = 138,830,666.71
5. Step 5: Solve for x
   x = 138,830,666.71/12,697.35
6. Step 6: Final answer
   x = 10,933.83