Finding the Fourth Proportional to 10,830.42, 16,256.55 and 7,713.93

Step by Step Solution

1. Step 1: Write the proportion equation
   10,830.42 : 16,256.55 = 7,713.93 : x
2. Step 2: Convert to fraction form
   10,830.42/16,256.55 = 7,713.93/x
3. Step 3: Cross multiply
   10,830.42x = 16,256.55 × 7,713.93
4. Step 4: Simplify right side
   10,830.42x = 125,401,888.74
5. Step 5: Solve for x
   x = 125,401,888.74/10,830.42
6. Step 6: Final answer
   x = 11,578.67