Finding the Fourth Proportional to 12,313,978.49, 18,473,977.89 and 8,677,801.01

Step by Step Solution

1. Step 1: Write the proportion equation
   12,313,978.49 : 18,473,977.89 = 8,677,801.01 : x
2. Step 2: Convert to fraction form
   12,313,978.49/18,473,977.89 = 8,677,801.01/x
3. Step 3: Cross multiply
   12,313,978.49x = 18,473,977.89 × 8,677,801.01
4. Step 4: Simplify right side
   12,313,978.49x = 160,313,503,900,189.81
5. Step 5: Solve for x
   x = 160,313,503,900,189.81/12,313,978.49
6. Step 6: Final answer
   x = 13,018,822.80