Finding the Fourth Proportional to 10,699.29, 16,015.31 and 7,347.91

Step by Step Solution

1. Step 1: Write the proportion equation
   10,699.29 : 16,015.31 = 7,347.91 : x
2. Step 2: Convert to fraction form
   10,699.29/16,015.31 = 7,347.91/x
3. Step 3: Cross multiply
   10,699.29x = 16,015.31 × 7,347.91
4. Step 4: Simplify right side
   10,699.29x = 117,679,056.50
5. Step 5: Solve for x
   x = 117,679,056.50/10,699.29
6. Step 6: Final answer
   x = 10,998.77