Finding the Fourth Proportional to 13,390.72, 20,085.06 and 5,069.98

Step by Step Solution

1. Step 1: Write the proportion equation
   13,390.72 : 20,085.06 = 5,069.98 : x
2. Step 2: Convert to fraction form
   13,390.72/20,085.06 = 5,069.98/x
3. Step 3: Cross multiply
   13,390.72x = 20,085.06 × 5,069.98
4. Step 4: Simplify right side
   13,390.72x = 101,830,852.50
5. Step 5: Solve for x
   x = 101,830,852.50/13,390.72
6. Step 6: Final answer
   x = 7,604.58