Finding the Fourth Proportional to 10,011.42, 13,830.41 and 7,900.97

Step by Step Solution

1. Step 1: Write the proportion equation
   10,011.42 : 13,830.41 = 7,900.97 : x
2. Step 2: Convert to fraction form
   10,011.42/13,830.41 = 7,900.97/x
3. Step 3: Cross multiply
   10,011.42x = 13,830.41 × 7,900.97
4. Step 4: Simplify right side
   10,011.42x = 109,273,605.10
5. Step 5: Solve for x
   x = 109,273,605.10/10,011.42
6. Step 6: Final answer
   x = 10,914.90