Finding the Fourth Proportional to 7,890.16, 10,809.40 and 7,594.72

Step by Step Solution

1. Step 1: Write the proportion equation
   7,890.16 : 10,809.40 = 7,594.72 : x
2. Step 2: Convert to fraction form
   7,890.16/10,809.40 = 7,594.72/x
3. Step 3: Cross multiply
   7,890.16x = 10,809.40 × 7,594.72
4. Step 4: Simplify right side
   7,890.16x = 82,094,366.37
5. Step 5: Solve for x
   x = 82,094,366.37/7,890.16
6. Step 6: Final answer
   x = 10,404.65