Finding the Fourth Proportional to 12,417.86, 17,131.80 and 7,109.84

Step by Step Solution

1. Step 1: Write the proportion equation
   12,417.86 : 17,131.80 = 7,109.84 : x
2. Step 2: Convert to fraction form
   12,417.86/17,131.80 = 7,109.84/x
3. Step 3: Cross multiply
   12,417.86x = 17,131.80 × 7,109.84
4. Step 4: Simplify right side
   12,417.86x = 121,804,356.91
5. Step 5: Solve for x
   x = 121,804,356.91/12,417.86
6. Step 6: Final answer
   x = 9,808.80