Finding the Fourth Proportional to 9,380.93, 12,945.68 and 5,402.81

Step by Step Solution

1. Step 1: Write the proportion equation
   9,380.93 : 12,945.68 = 5,402.81 : x
2. Step 2: Convert to fraction form
   9,380.93/12,945.68 = 5,402.81/x
3. Step 3: Cross multiply
   9,380.93x = 12,945.68 × 5,402.81
4. Step 4: Simplify right side
   9,380.93x = 69,943,095.23
5. Step 5: Solve for x
   x = 69,943,095.23/9,380.93
6. Step 6: Final answer
   x = 7,455.88