Finding the Fourth Proportional to 13,996.86, 19,314.96 and 7,709.10

Step by Step Solution

1. Step 1: Write the proportion equation
   13,996.86 : 19,314.96 = 7,709.10 : x
2. Step 2: Convert to fraction form
   13,996.86/19,314.96 = 7,709.10/x
3. Step 3: Cross multiply
   13,996.86x = 19,314.96 × 7,709.10
4. Step 4: Simplify right side
   13,996.86x = 148,900,958.14
5. Step 5: Solve for x
   x = 148,900,958.14/13,996.86
6. Step 6: Final answer
   x = 10,638.17