Finding the Fourth Proportional to 13,093.90, 18,068.25 and 7,428.94

Step by Step Solution

1. Step 1: Write the proportion equation
   13,093.90 : 18,068.25 = 7,428.94 : x
2. Step 2: Convert to fraction form
   13,093.90/18,068.25 = 7,428.94/x
3. Step 3: Cross multiply
   13,093.90x = 18,068.25 × 7,428.94
4. Step 4: Simplify right side
   13,093.90x = 134,227,945.16
5. Step 5: Solve for x
   x = 134,227,945.16/13,093.90
6. Step 6: Final answer
   x = 10,251.18