Finding the Fourth Proportional to 13,012.95, 19,505.46 and 5,620.89

Step by Step Solution

1. Step 1: Write the proportion equation
   13,012.95 : 19,505.46 = 5,620.89 : x
2. Step 2: Convert to fraction form
   13,012.95/19,505.46 = 5,620.89/x
3. Step 3: Cross multiply
   13,012.95x = 19,505.46 × 5,620.89
4. Step 4: Simplify right side
   13,012.95x = 109,638,045.06
5. Step 5: Solve for x
   x = 109,638,045.06/13,012.95
6. Step 6: Final answer
   x = 8,425.30