Finding the Fourth Proportional to 7,945.63, 10,966.98 and 5,428.75

Step by Step Solution

1. Step 1: Write the proportion equation
   7,945.63 : 10,966.98 = 5,428.75 : x
2. Step 2: Convert to fraction form
   7,945.63/10,966.98 = 5,428.75/x
3. Step 3: Cross multiply
   7,945.63x = 10,966.98 × 5,428.75
4. Step 4: Simplify right side
   7,945.63x = 59,537,006.52
5. Step 5: Solve for x
   x = 59,537,006.52/7,945.63
6. Step 6: Final answer
   x = 7,493.06