Finding the Fourth Proportional to 10,904.18, 16,430.46 and 8,973.12

Step by Step Solution

1. Step 1: Write the proportion equation
   10,904.18 : 16,430.46 = 8,973.12 : x
2. Step 2: Convert to fraction form
   10,904.18/16,430.46 = 8,973.12/x
3. Step 3: Cross multiply
   10,904.18x = 16,430.46 × 8,973.12
4. Step 4: Simplify right side
   10,904.18x = 147,432,470.59
5. Step 5: Solve for x
   x = 147,432,470.59/10,904.18
6. Step 6: Final answer
   x = 13,520.73