Finding the Fourth Proportional to 10,830.72, 14,941.86 and 7,287.78

Step by Step Solution

1. Step 1: Write the proportion equation
   10,830.72 : 14,941.86 = 7,287.78 : x
2. Step 2: Convert to fraction form
   10,830.72/14,941.86 = 7,287.78/x
3. Step 3: Cross multiply
   10,830.72x = 14,941.86 × 7,287.78
4. Step 4: Simplify right side
   10,830.72x = 108,892,988.47
5. Step 5: Solve for x
   x = 108,892,988.47/10,830.72
6. Step 6: Final answer
   x = 10,054.09