Finding the Fourth Proportional to 15,510.89, 21,404.93 and 8,437.34

Step by Step Solution

1. Step 1: Write the proportion equation
   15,510.89 : 21,404.93 = 8,437.34 : x
2. Step 2: Convert to fraction form
   15,510.89/21,404.93 = 8,437.34/x
3. Step 3: Cross multiply
   15,510.89x = 21,404.93 × 8,437.34
4. Step 4: Simplify right side
   15,510.89x = 180,600,522.87
5. Step 5: Solve for x
   x = 180,600,522.87/15,510.89
6. Step 6: Final answer
   x = 11,643.47