Finding the Fourth Proportional to 9,926.90, 13,699.06 and 5,450.72

Step by Step Solution

1. Step 1: Write the proportion equation
   9,926.90 : 13,699.06 = 5,450.72 : x
2. Step 2: Convert to fraction form
   9,926.90/13,699.06 = 5,450.72/x
3. Step 3: Cross multiply
   9,926.90x = 13,699.06 × 5,450.72
4. Step 4: Simplify right side
   9,926.90x = 74,669,740.32
5. Step 5: Solve for x
   x = 74,669,740.32/9,926.90
6. Step 6: Final answer
   x = 7,521.96