Finding the Fourth Proportional to 38,555.82, 53,206.72 and 21,560.10

Step by Step Solution

1. Step 1: Write the proportion equation
   38,555.82 : 53,206.72 = 21,560.10 : x
2. Step 2: Convert to fraction form
   38,555.82/53,206.72 = 21,560.10/x
3. Step 3: Cross multiply
   38,555.82x = 53,206.72 × 21,560.10
4. Step 4: Simplify right side
   38,555.82x = 1,147,141,950.45
5. Step 5: Solve for x
   x = 1,147,141,950.45/38,555.82
6. Step 6: Final answer
   x = 29,752.76