Finding the Fourth Proportional to 31,613.19, 43,575.54 and 21,401.00

Step by Step Solution

1. Step 1: Write the proportion equation
   31,613.19 : 43,575.54 = 21,401.00 : x
2. Step 2: Convert to fraction form
   31,613.19/43,575.54 = 21,401.00/x
3. Step 3: Cross multiply
   31,613.19x = 43,575.54 × 21,401.00
4. Step 4: Simplify right side
   31,613.19x = 932,560,322.55
5. Step 5: Solve for x
   x = 932,560,322.55/31,613.19
6. Step 6: Final answer
   x = 29,499.09