Finding the Fourth Proportional to 12,612.86, 17,407.83 and 9,623.06

Step by Step Solution

1. Step 1: Write the proportion equation
   12,612.86 : 17,407.83 = 9,623.06 : x
2. Step 2: Convert to fraction form
   12,612.86/17,407.83 = 9,623.06/x
3. Step 3: Cross multiply
   12,612.86x = 17,407.83 × 9,623.06
4. Step 4: Simplify right side
   12,612.86x = 167,516,505.52
5. Step 5: Solve for x
   x = 167,516,505.52/12,612.86
6. Step 6: Final answer
   x = 13,281.41