Finding the Fourth Proportional to 22,773.79, 31,430.10 and 13,820.59

Step by Step Solution

1. Step 1: Write the proportion equation
   22,773.79 : 31,430.10 = 13,820.59 : x
2. Step 2: Convert to fraction form
   22,773.79/31,430.10 = 13,820.59/x
3. Step 3: Cross multiply
   22,773.79x = 31,430.10 × 13,820.59
4. Step 4: Simplify right side
   22,773.79x = 434,382,525.76
5. Step 5: Solve for x
   x = 434,382,525.76/22,773.79
6. Step 6: Final answer
   x = 19,073.79