Finding the Fourth Proportional to 13,091.66, 18,066.41 and 7,123.35

Step by Step Solution

1. Step 1: Write the proportion equation
   13,091.66 : 18,066.41 = 7,123.35 : x
2. Step 2: Convert to fraction form
   13,091.66/18,066.41 = 7,123.35/x
3. Step 3: Cross multiply
   13,091.66x = 18,066.41 × 7,123.35
4. Step 4: Simplify right side
   13,091.66x = 128,693,389.03
5. Step 5: Solve for x
   x = 128,693,389.03/13,091.66
6. Step 6: Final answer
   x = 9,830.18