Finding the Fourth Proportional to 13,093.16, 18,068.61 and 7,124.78

Step by Step Solution

1. Step 1: Write the proportion equation
   13,093.16 : 18,068.61 = 7,124.78 : x
2. Step 2: Convert to fraction form
   13,093.16/18,068.61 = 7,124.78/x
3. Step 3: Cross multiply
   13,093.16x = 18,068.61 × 7,124.78
4. Step 4: Simplify right side
   13,093.16x = 128,734,943.05
5. Step 5: Solve for x
   x = 128,734,943.05/13,093.16
6. Step 6: Final answer
   x = 9,832.23