Finding the Fourth Proportional to 13,092.21, 18,066.69 and 7,123.77

Step by Step Solution

1. Step 1: Write the proportion equation
   13,092.21 : 18,066.69 = 7,123.77 : x
2. Step 2: Convert to fraction form
   13,092.21/18,066.69 = 7,123.77/x
3. Step 3: Cross multiply
   13,092.21x = 18,066.69 × 7,123.77
4. Step 4: Simplify right side
   13,092.21x = 128,702,944.22
5. Step 5: Solve for x
   x = 128,702,944.22/13,092.21
6. Step 6: Final answer
   x = 9,830.50