Finding the Fourth Proportional to 16,385.79, 22,612.40 and 9,312.03

Step by Step Solution

1. Step 1: Write the proportion equation
   16,385.79 : 22,612.40 = 9,312.03 : x
2. Step 2: Convert to fraction form
   16,385.79/22,612.40 = 9,312.03/x
3. Step 3: Cross multiply
   16,385.79x = 22,612.40 × 9,312.03
4. Step 4: Simplify right side
   16,385.79x = 210,567,300.61
5. Step 5: Solve for x
   x = 210,567,300.61/16,385.79
6. Step 6: Final answer
   x = 12,850.60