Finding the Fourth Proportional to 13,146,407.85, 18,142,981.61 and 7,265,915.67

Step by Step Solution

1. Step 1: Write the proportion equation
   13,146,407.85 : 18,142,981.61 = 7,265,915.67 : x
2. Step 2: Convert to fraction form
   13,146,407.85/18,142,981.61 = 7,265,915.67/x
3. Step 3: Cross multiply
   13,146,407.85x = 18,142,981.61 × 7,265,915.67
4. Step 4: Simplify right side
   13,146,407.85x = 131,825,374,301,226.72
5. Step 5: Solve for x
   x = 131,825,374,301,226.72/13,146,407.85
6. Step 6: Final answer
   x = 10,027,482.47