Finding the Fourth Proportional to 13,077.32, 18,047.09 and 7,412.08

Step by Step Solution

1. Step 1: Write the proportion equation
   13,077.32 : 18,047.09 = 7,412.08 : x
2. Step 2: Convert to fraction form
   13,077.32/18,047.09 = 7,412.08/x
3. Step 3: Cross multiply
   13,077.32x = 18,047.09 × 7,412.08
4. Step 4: Simplify right side
   13,077.32x = 133,766,384.61
5. Step 5: Solve for x
   x = 133,766,384.61/13,077.32
6. Step 6: Final answer
   x = 10,228.89