Finding the Fourth Proportional to 13,907.81, 19,193.27 and 7,620.59

Step by Step Solution

1. Step 1: Write the proportion equation
   13,907.81 : 19,193.27 = 7,620.59 : x
2. Step 2: Convert to fraction form
   13,907.81/19,193.27 = 7,620.59/x
3. Step 3: Cross multiply
   13,907.81x = 19,193.27 × 7,620.59
4. Step 4: Simplify right side
   13,907.81x = 146,264,051.31
5. Step 5: Solve for x
   x = 146,264,051.31/13,907.81
6. Step 6: Final answer
   x = 10,516.68