Finding the Fourth Proportional to 13,173.84, 18,179.73 and 7,875.72

Step by Step Solution

1. Step 1: Write the proportion equation
   13,173.84 : 18,179.73 = 7,875.72 : x
2. Step 2: Convert to fraction form
   13,173.84/18,179.73 = 7,875.72/x
3. Step 3: Cross multiply
   13,173.84x = 18,179.73 × 7,875.72
4. Step 4: Simplify right side
   13,173.84x = 143,178,463.16
5. Step 5: Solve for x
   x = 143,178,463.16/13,173.84
6. Step 6: Final answer
   x = 10,868.39