Finding the Fourth Proportional to 13,068.72, 18,035.15 and 7,100.73

Step by Step Solution

1. Step 1: Write the proportion equation
   13,068.72 : 18,035.15 = 7,100.73 : x
2. Step 2: Convert to fraction form
   13,068.72/18,035.15 = 7,100.73/x
3. Step 3: Cross multiply
   13,068.72x = 18,035.15 × 7,100.73
4. Step 4: Simplify right side
   13,068.72x = 128,062,695.16
5. Step 5: Solve for x
   x = 128,062,695.16/13,068.72
6. Step 6: Final answer
   x = 9,799.18