Finding the Fourth Proportional to 18,407,498.34, 25,402,424.71 and 10,147,379.31

Step by Step Solution

1. Step 1: Write the proportion equation
   18,407,498.34 : 25,402,424.71 = 10,147,379.31 : x
2. Step 2: Convert to fraction form
   18,407,498.34/25,402,424.71 = 10,147,379.31/x
3. Step 3: Cross multiply
   18,407,498.34x = 25,402,424.71 × 10,147,379.31
4. Step 4: Simplify right side
   18,407,498.34x = 257,768,038,900,718.31
5. Step 5: Solve for x
   x = 257,768,038,900,718.31/18,407,498.34
6. Step 6: Final answer
   x = 14,003,425.89