Finding the Fourth Proportional to 10,699.48, 16,051.98 and 4,123.90

Step by Step Solution

1. Step 1: Write the proportion equation
   10,699.48 : 16,051.98 = 4,123.90 : x
2. Step 2: Convert to fraction form
   10,699.48/16,051.98 = 4,123.90/x
3. Step 3: Cross multiply
   10,699.48x = 16,051.98 × 4,123.90
4. Step 4: Simplify right side
   10,699.48x = 66,196,760.32
5. Step 5: Solve for x
   x = 66,196,760.32/10,699.48
6. Step 6: Final answer
   x = 6,186.91