Finding the Fourth Proportional to 16,420.04, 22,654.32 and 9,705.88

Step by Step Solution

1. Step 1: Write the proportion equation
   16,420.04 : 22,654.32 = 9,705.88 : x
2. Step 2: Convert to fraction form
   16,420.04/22,654.32 = 9,705.88/x
3. Step 3: Cross multiply
   16,420.04x = 22,654.32 × 9,705.88
4. Step 4: Simplify right side
   16,420.04x = 219,880,111.40
5. Step 5: Solve for x
   x = 219,880,111.40/16,420.04
6. Step 6: Final answer
   x = 13,390.96