Finding the Fourth Proportional to 13,093.25, 18,068.60 and 7,124.90

Step by Step Solution

1. Step 1: Write the proportion equation
   13,093.25 : 18,068.60 = 7,124.90 : x
2. Step 2: Convert to fraction form
   13,093.25/18,068.60 = 7,124.90/x
3. Step 3: Cross multiply
   13,093.25x = 18,068.60 × 7,124.90
4. Step 4: Simplify right side
   13,093.25x = 128,736,895.61
5. Step 5: Solve for x
   x = 128,736,895.61/13,093.25
6. Step 6: Final answer
   x = 9,832.31