Finding the Fourth Proportional to 12,936.71, 17,854.59 and 7,903.84

Step by Step Solution

1. Step 1: Write the proportion equation
   12,936.71 : 17,854.59 = 7,903.84 : x
2. Step 2: Convert to fraction form
   12,936.71/17,854.59 = 7,903.84/x
3. Step 3: Cross multiply
   12,936.71x = 17,854.59 × 7,903.84
4. Step 4: Simplify right side
   12,936.71x = 141,119,822.63
5. Step 5: Solve for x
   x = 141,119,822.63/12,936.71
6. Step 6: Final answer
   x = 10,908.48