Finding the Fourth Proportional to 13,549.98, 18,699.76 and 7,581.60

Step by Step Solution

1. Step 1: Write the proportion equation
   13,549.98 : 18,699.76 = 7,581.60 : x
2. Step 2: Convert to fraction form
   13,549.98/18,699.76 = 7,581.60/x
3. Step 3: Cross multiply
   13,549.98x = 18,699.76 × 7,581.60
4. Step 4: Simplify right side
   13,549.98x = 141,774,109.89
5. Step 5: Solve for x
   x = 141,774,109.89/13,549.98
6. Step 6: Final answer
   x = 10,463.05