Finding the Fourth Proportional to 13,100.92, 18,080.21 and 7,436.63

Step by Step Solution

1. Step 1: Write the proportion equation
   13,100.92 : 18,080.21 = 7,436.63 : x
2. Step 2: Convert to fraction form
   13,100.92/18,080.21 = 7,436.63/x
3. Step 3: Cross multiply
   13,100.92x = 18,080.21 × 7,436.63
4. Step 4: Simplify right side
   13,100.92x = 134,455,832.09
5. Step 5: Solve for x
   x = 134,455,832.09/13,100.92
6. Step 6: Final answer
   x = 10,263.08