Finding the Fourth Proportional to 12,483.60, 17,230.76 and 7,178.96

Step by Step Solution

1. Step 1: Write the proportion equation
   12,483.60 : 17,230.76 = 7,178.96 : x
2. Step 2: Convert to fraction form
   12,483.60/17,230.76 = 7,178.96/x
3. Step 3: Cross multiply
   12,483.60x = 17,230.76 × 7,178.96
4. Step 4: Simplify right side
   12,483.60x = 123,698,936.81
5. Step 5: Solve for x
   x = 123,698,936.81/12,483.60
6. Step 6: Final answer
   x = 9,908.92