Finding the Fourth Proportional to 10,499.13, 14,477.67 and 9,441.09

Step by Step Solution

1. Step 1: Write the proportion equation
   10,499.13 : 14,477.67 = 9,441.09 : x
2. Step 2: Convert to fraction form
   10,499.13/14,477.67 = 9,441.09/x
3. Step 3: Cross multiply
   10,499.13x = 14,477.67 × 9,441.09
4. Step 4: Simplify right side
   10,499.13x = 136,684,985.46
5. Step 5: Solve for x
   x = 136,684,985.46/10,499.13
6. Step 6: Final answer
   x = 13,018.70