Finding the Fourth Proportional to 13,091.93, 18,066.58 and 7,123.62

Step by Step Solution

1. Step 1: Write the proportion equation
   13,091.93 : 18,066.58 = 7,123.62 : x
2. Step 2: Convert to fraction form
   13,091.93/18,066.58 = 7,123.62/x
3. Step 3: Cross multiply
   13,091.93x = 18,066.58 × 7,123.62
4. Step 4: Simplify right side
   13,091.93x = 128,699,398.94
5. Step 5: Solve for x
   x = 128,699,398.94/13,091.93
6. Step 6: Final answer
   x = 9,830.43