Finding the Fourth Proportional to 12,710.45, 19,068.72 and 3,945.34

Step by Step Solution

1. Step 1: Write the proportion equation
   12,710.45 : 19,068.72 = 3,945.34 : x
2. Step 2: Convert to fraction form
   12,710.45/19,068.72 = 3,945.34/x
3. Step 3: Cross multiply
   12,710.45x = 19,068.72 × 3,945.34
4. Step 4: Simplify right side
   12,710.45x = 75,232,592.81
5. Step 5: Solve for x
   x = 75,232,592.81/12,710.45
6. Step 6: Final answer
   x = 5,918.95