Finding the Fourth Proportional to 12,429,056.10, 18,612,091.35 and 9,909,632.10

Step by Step Solution

1. Step 1: Write the proportion equation
   12,429,056.10 : 18,612,091.35 = 9,909,632.10 : x
2. Step 2: Convert to fraction form
   12,429,056.10/18,612,091.35 = 9,909,632.10/x
3. Step 3: Cross multiply
   12,429,056.10x = 18,612,091.35 × 9,909,632.10
4. Step 4: Simplify right side
   12,429,056.10x = 184,438,977,890,092.34
5. Step 5: Solve for x
   x = 184,438,977,890,092.34/12,429,056.10
6. Step 6: Final answer
   x = 14,839,339.08