Finding the Fourth Proportional to 14,485.83, 19,985.83 and 9,457.21

Step by Step Solution

1. Step 1: Write the proportion equation
   14,485.83 : 19,985.83 = 9,457.21 : x
2. Step 2: Convert to fraction form
   14,485.83/19,985.83 = 9,457.21/x
3. Step 3: Cross multiply
   14,485.83x = 19,985.83 × 9,457.21
4. Step 4: Simplify right side
   14,485.83x = 189,010,191.33
5. Step 5: Solve for x
   x = 189,010,191.33/14,485.83
6. Step 6: Final answer
   x = 13,047.94