Finding the Fourth Proportional to 28,801.98, 43,105.42 and 17,715.69

Step by Step Solution

1. Step 1: Write the proportion equation
   28,801.98 : 43,105.42 = 17,715.69 : x
2. Step 2: Convert to fraction form
   28,801.98/43,105.42 = 17,715.69/x
3. Step 3: Cross multiply
   28,801.98x = 43,105.42 × 17,715.69
4. Step 4: Simplify right side
   28,801.98x = 763,642,258.04
5. Step 5: Solve for x
   x = 763,642,258.04/28,801.98
6. Step 6: Final answer
   x = 26,513.53