Finding the Fourth Proportional to 13,259.76, 18,298.53 and 7,291.81

Step by Step Solution

1. Step 1: Write the proportion equation
   13,259.76 : 18,298.53 = 7,291.81 : x
2. Step 2: Convert to fraction form
   13,259.76/18,298.53 = 7,291.81/x
3. Step 3: Cross multiply
   13,259.76x = 18,298.53 × 7,291.81
4. Step 4: Simplify right side
   13,259.76x = 133,429,404.04
5. Step 5: Solve for x
   x = 133,429,404.04/13,259.76
6. Step 6: Final answer
   x = 10,062.73