Finding the Fourth Proportional to 13,505.06, 18,636.98 and 7,536.77

Step by Step Solution

1. Step 1: Write the proportion equation
   13,505.06 : 18,636.98 = 7,536.77 : x
2. Step 2: Convert to fraction form
   13,505.06/18,636.98 = 7,536.77/x
3. Step 3: Cross multiply
   13,505.06x = 18,636.98 × 7,536.77
4. Step 4: Simplify right side
   13,505.06x = 140,462,538.57
5. Step 5: Solve for x
   x = 140,462,538.57/13,505.06
6. Step 6: Final answer
   x = 10,400.74