Finding the Fourth Proportional to 22,779.76, 31,436.12 and 12,707.95

Step by Step Solution

1. Step 1: Write the proportion equation
   22,779.76 : 31,436.12 = 12,707.95 : x
2. Step 2: Convert to fraction form
   22,779.76/31,436.12 = 12,707.95/x
3. Step 3: Cross multiply
   22,779.76x = 31,436.12 × 12,707.95
4. Step 4: Simplify right side
   22,779.76x = 399,488,641.15
5. Step 5: Solve for x
   x = 399,488,641.15/22,779.76
6. Step 6: Final answer
   x = 17,537.00