Finding the Fourth Proportional to 13,111.17, 18,092.70 and 7,445.79

Step by Step Solution

1. Step 1: Write the proportion equation
   13,111.17 : 18,092.70 = 7,445.79 : x
2. Step 2: Convert to fraction form
   13,111.17/18,092.70 = 7,445.79/x
3. Step 3: Cross multiply
   13,111.17x = 18,092.70 × 7,445.79
4. Step 4: Simplify right side
   13,111.17x = 134,714,444.73
5. Step 5: Solve for x
   x = 134,714,444.73/13,111.17
6. Step 6: Final answer
   x = 10,274.78