Finding the Fourth Proportional to 18,619,648.56, 25,692,087.18 and 10,359,498.60

Step by Step Solution

1. Step 1: Write the proportion equation
   18,619,648.56 : 25,692,087.18 = 10,359,498.60 : x
2. Step 2: Convert to fraction form
   18,619,648.56/25,692,087.18 = 10,359,498.60/x
3. Step 3: Cross multiply
   18,619,648.56x = 25,692,087.18 × 10,359,498.60
4. Step 4: Simplify right side
   18,619,648.56x = 266,157,141,172,287.94
5. Step 5: Solve for x
   x = 266,157,141,172,287.94/18,619,648.56
6. Step 6: Final answer
   x = 14,294,423.46