Finding the Fourth Proportional to 13,113.17, 19,646.43 and 7,555.03

Step by Step Solution

1. Step 1: Write the proportion equation
   13,113.17 : 19,646.43 = 7,555.03 : x
2. Step 2: Convert to fraction form
   13,113.17/19,646.43 = 7,555.03/x
3. Step 3: Cross multiply
   13,113.17x = 19,646.43 × 7,555.03
4. Step 4: Simplify right side
   13,113.17x = 148,429,273.59
5. Step 5: Solve for x
   x = 148,429,273.59/13,113.17
6. Step 6: Final answer
   x = 11,319.10