Finding the Fourth Proportional to 16,900.95, 23,321.98 and 9,347.30

Step by Step Solution

1. Step 1: Write the proportion equation
   16,900.95 : 23,321.98 = 9,347.30 : x
2. Step 2: Convert to fraction form
   16,900.95/23,321.98 = 9,347.30/x
3. Step 3: Cross multiply
   16,900.95x = 23,321.98 × 9,347.30
4. Step 4: Simplify right side
   16,900.95x = 217,997,473.61
5. Step 5: Solve for x
   x = 217,997,473.61/16,900.95
6. Step 6: Final answer
   x = 12,898.53