Finding the Fourth Proportional to 8,730.32, 12,045.73 and 5,145.42

Step by Step Solution

1. Step 1: Write the proportion equation
   8,730.32 : 12,045.73 = 5,145.42 : x
2. Step 2: Convert to fraction form
   8,730.32/12,045.73 = 5,145.42/x
3. Step 3: Cross multiply
   8,730.32x = 12,045.73 × 5,145.42
4. Step 4: Simplify right side
   8,730.32x = 61,980,279.83
5. Step 5: Solve for x
   x = 61,980,279.83/8,730.32
6. Step 6: Final answer
   x = 7,099.43