Finding the Fourth Proportional to 31,636.90, 43,656.72 and 17,488.63

Step by Step Solution

1. Step 1: Write the proportion equation
   31,636.90 : 43,656.72 = 17,488.63 : x
2. Step 2: Convert to fraction form
   31,636.90/43,656.72 = 17,488.63/x
3. Step 3: Cross multiply
   31,636.90x = 43,656.72 × 17,488.63
4. Step 4: Simplify right side
   31,636.90x = 763,496,004.81
5. Step 5: Solve for x
   x = 763,496,004.81/31,636.90
6. Step 6: Final answer
   x = 24,133.09